$ 32.75
$ 32.75
$ 32.75
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Size
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Grit
Alpha® Ceramica Resin Wet Polishing Pads for Granite
Alpha® Ceramica Resin discs are the backbone of the granite polishing process. Heat-sintered in a mold with a durable resin compound, they stay flexible while delivering consistent, professional results — particularly on curved edges and inside sinkhole cutouts for undermount sinks. Available in 3", 4", and 5" diameters across the full six-grit sequence (#150 through #3000), Ceramica Resin is engineered for hand polishing on a center water-feed polisher at low RPM (2,000–2,500 optimal, 4,000 max).
Features
- Heat-sintered resin bond — flexible with consistent performance
- Designed for wet hand polishing of granite edges & curves (sinkholes, undermounts)
- Hook & loop backing — pairs with Alpha® flexible or rigid backer pads
- Six-grit sequence: #150, #300, #500, #1000, #2000, #3000
- Three diameters: 3", 4", 5" (4" is the most common)
- Cost-effective vs. competitive polishing discs
| Part No. | Size | Grit | Color | Max RPM | UPC |
|---|---|---|---|---|---|
| GP30150R | 3" | #150 | Yellow | 4,000 | 749173520174 |
| GP30300R | 3" | #300 | Orange | 4,000 | 749173510052 |
| GP30500R | 3" | #500 | Red | 4,000 | 749173520198 |
| GP31000R | 3" | #1000 | Dark Green | 4,000 | 749173520204 |
| GP32000R | 3" | #2000 | Light Green | 4,000 | 749173520211 |
| GP33000R | 3" | #3000 | Brown | 4,000 | 749173520228 |
| GP40150R | 4" | #150 | Yellow | 4,000 | 749173520327 |
| GP40300R | 4" | #300 | Orange | 4,000 | 749173510069 |
| GP40500R | 4" | #500 | Red | 4,000 | 749173520341 |
| GP41000R | 4" | #1000 | Dark Green | 4,000 | 749173520358 |
| GP42000R | 4" | #2000 | Light Green | 4,000 | 749173520365 |
| GP43000R | 4" | #3000 | Brown | 4,000 | 749173520372 |
| GP50150R | 5" | #150 | Yellow | 4,000 | 749173520471 |
| GP50300R | 5" | #300 | Orange | 4,000 | 749173510076 |
| GP50500R | 5" | #500 | Red | 4,000 | 749173520495 |
| GP51000R | 5" | #1000 | Dark Green | 4,000 | 749173520501 |
| GP52000R | 5" | #2000 | Light Green | 4,000 | 749173520518 |
| GP53000R | 5" | #3000 | Brown | 4,000 | 749173520525 |
- Pre-grind saw and grinding marks with an Alpha® #60 Vitrified disc before starting Ceramica Resin — this protects the #150 grit and extends its life.
- Mount a backer pad on a center water-feed polisher (e.g. Alpha® VSP-320 or AIR-680). Use a flexible backer for curves/bullnose and a rigid backer for flat edges or straight runs.
- Run the full grit sequence in order: #150 → #300 → #500 → #1000 → #2000 → #3000. Skipping grits will not yield a high-quality finish.
- Polish at 2,000–2,500 RPM (4,000 RPM max). Higher speeds reduce finish quality and burn discs. Use 2 to 3 passes per grit on average — do not rush.
- Keep center water flowing at all times. Ceramica Resin is wet-only.
- For final gloss on dark granite, follow Ceramica Resin with an Alpha® Ceramica Buff (black for dark stones, white for light). Do not use Ceramica Resin on engineered stone — use Ceramica EX instead.
Yellow (#150 grit) — 3" (76 mm) — Hook & Loop — Wet Resin Polishing Pad — GP30150R
| Part No. | GP30150R |
| UPC | 749173520174 |
| Size | 3" (76 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Yellow (#150 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Initial wet polishing — removes saw & grinding marks |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.25" x 3.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Orange (#300 grit) — 3" (76 mm) — Hook & Loop — Wet Resin Polishing Pad — GP30300R
| Part No. | GP30300R |
| UPC | 749173510052 |
| Size | 3" (76 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Orange (#300 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Intermediate wet polishing on granite edges & sinkholes |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.25" x 3.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Red (#500 grit) — 3" (76 mm) — Hook & Loop — Wet Resin Polishing Pad — GP30500R
| Part No. | GP30500R |
| UPC | 749173520198 |
| Size | 3" (76 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Red (#500 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Intermediate wet polishing on granite edges & sinkholes |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.25" x 3.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Dark Green (#1000 grit) — 3" (76 mm) — Hook & Loop — Wet Resin Polishing Pad — GP31000R
| Part No. | GP31000R |
| UPC | 749173520204 |
| Size | 3" (76 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Dark Green (#1000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Refining wet polishing on granite edges |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.25" x 3.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Light Green (#2000 grit) — 3" (76 mm) — Hook & Loop — Wet Resin Polishing Pad — GP32000R
| Part No. | GP32000R |
| UPC | 749173520211 |
| Size | 3" (76 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Light Green (#2000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Final-stage wet polishing on granite edges |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.25" x 3.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Brown (#3000 grit) — 3" (76 mm) — Hook & Loop — Wet Resin Polishing Pad — GP33000R
| Part No. | GP33000R |
| UPC | 749173520228 |
| Size | 3" (76 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Brown (#3000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Final-stage wet polishing on granite edges |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 3.25" x 3.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Yellow (#150 grit) — 4" (102 mm) — Hook & Loop — Wet Resin Polishing Pad — GP40150R
| Part No. | GP40150R |
| UPC | 749173520327 |
| Size | 4" (102 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Yellow (#150 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Initial wet polishing — removes saw & grinding marks |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 4.25" x 4.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Orange (#300 grit) — 4" (102 mm) — Hook & Loop — Wet Resin Polishing Pad — GP40300R
| Part No. | GP40300R |
| UPC | 749173510069 |
| Size | 4" (102 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Orange (#300 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Intermediate wet polishing on granite edges & sinkholes |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 4.25" x 4.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Red (#500 grit) — 4" (102 mm) — Hook & Loop — Wet Resin Polishing Pad — GP40500R
| Part No. | GP40500R |
| UPC | 749173520341 |
| Size | 4" (102 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Red (#500 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Intermediate wet polishing on granite edges & sinkholes |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 4.25" x 4.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Dark Green (#1000 grit) — 4" (102 mm) — Hook & Loop — Wet Resin Polishing Pad — GP41000R
| Part No. | GP41000R |
| UPC | 749173520358 |
| Size | 4" (102 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Dark Green (#1000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Refining wet polishing on granite edges |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 4.25" x 4.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Light Green (#2000 grit) — 4" (102 mm) — Hook & Loop — Wet Resin Polishing Pad — GP42000R
| Part No. | GP42000R |
| UPC | 749173520365 |
| Size | 4" (102 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Light Green (#2000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Final-stage wet polishing on granite edges |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 4.25" x 4.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Brown (#3000 grit) — 4" (102 mm) — Hook & Loop — Wet Resin Polishing Pad — GP43000R
| Part No. | GP43000R |
| UPC | 749173520372 |
| Size | 4" (102 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Brown (#3000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Final-stage wet polishing on granite edges |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 4.25" x 4.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Yellow (#150 grit) — 5" (127 mm) — Hook & Loop — Wet Resin Polishing Pad — GP50150R
| Part No. | GP50150R |
| UPC | 749173520471 |
| Size | 5" (127 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Yellow (#150 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Initial wet polishing — removes saw & grinding marks |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 5.25" x 5.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Orange (#300 grit) — 5" (127 mm) — Hook & Loop — Wet Resin Polishing Pad — GP50300R
| Part No. | GP50300R |
| UPC | 749173510076 |
| Size | 5" (127 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Orange (#300 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Intermediate wet polishing on granite edges & sinkholes |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 5.25" x 5.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Red (#500 grit) — 5" (127 mm) — Hook & Loop — Wet Resin Polishing Pad — GP50500R
| Part No. | GP50500R |
| UPC | 749173520495 |
| Size | 5" (127 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Red (#500 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Intermediate wet polishing on granite edges & sinkholes |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 5.25" x 5.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Dark Green (#1000 grit) — 5" (127 mm) — Hook & Loop — Wet Resin Polishing Pad — GP51000R
| Part No. | GP51000R |
| UPC | 749173520501 |
| Size | 5" (127 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Dark Green (#1000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Refining wet polishing on granite edges |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 5.25" x 5.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Light Green (#2000 grit) — 5" (127 mm) — Hook & Loop — Wet Resin Polishing Pad — GP52000R
| Part No. | GP52000R |
| UPC | 749173520518 |
| Size | 5" (127 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Light Green (#2000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Final-stage wet polishing on granite edges |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 5.25" x 5.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
Brown (#3000 grit) — 5" (127 mm) — Hook & Loop — Wet Resin Polishing Pad — GP53000R
| Part No. | GP53000R |
| UPC | 749173520525 |
| Size | 5" (127 mm) |
| Type | Wet Resin Polishing Pad |
| Color | Brown (#3000 grit) |
| Attachment | Hook & Loop |
| Max RPM | 4,000 RPM (optimal 2,000–2,500) |
| Recommended For | Final-stage wet polishing on granite edges |
| Packaged Weight | 0.20 lbs |
| Package Dimensions | 5.25" x 5.25" x 0.25" |
| Commodity Code | 6804.21.0090 |
| Country of Origin | Japan |
| Property | Detail |
|---|---|
| Application | Wet hand polishing of granite edges & curves |
| Bond / Construction | Heat-sintered durable resin compound |
| Attachment | Hook & loop |
| Optimal RPM | 2,000–2,500 |
| Max RPM | 4,000 |
| Sizes Offered | 3 in (76 mm), 4 in (102 mm), 5 in (127 mm) |
| Grit Sequence | #150, #300, #500, #1000, #2000, #3000 |
| Water | Center water-feed required (wet-use only) |
| Pre-Step | Alpha® #60 Vitrified disc to remove saw & grinding marks |
| Recommended Tools | Alpha® VSP-320 variable-speed polisher, AIR-680 pneumatic polisher |
| Final Step | Alpha® Ceramica Buff (Black for dark stones, White for light) |
| NOT For | Engineered/quartz stone (use Ceramica EX), floor machines (use Advantage Floor), angle grinders >4,000 RPM |
Do I really need every grit in the sequence?
Yes. Using anything less than the full sequence will not yield a high-quality finish.
What materials does Ceramica Resin work on?
Ceramica Resin is designed for use on granite only. For engineered/quartz stone use Ceramica EX.
Why start with a #60 Vitrified disc?
The #60 Vitrified removes saw and grinding marks. Skipping it forces the #150 grit to work harder and shortens its life.
Can I use Ceramica Resin on an angle grinder?
No. Ordinary angle grinders are far too fast and will burn the discs. Use only water-feed polishers at 4,000 RPM max.
Center water-feed or sponge water?
Center water-feed only. Alpha® recommends the VSP-320 or AIR-680.
How long does a disc last?
It depends on material and technique, but Alpha® studies show no competing disc comes close to Ceramica Resin’s lifespan.
How many passes per grit?
On average 2 to 3 passes per grit. Don’t rush — each grit must do its job.
What is the optimal RPM?
Designed to run at 2,000–2,500 RPM, with 4,000 RPM as the absolute maximum. Exceeding this reduces finish quality.
Vitrified vs. Resin — what is the difference?
Vitrified discs are more aggressive: about 3× faster material removal and longer life. Use vitrified for prep, resin for finishing.
Can I polish engineered stone with Ceramica Resin?
No. Ceramica Resin is granite-only. For engineered stone use Alpha® Ceramica EX.
Can I use Ceramica Resin on a floor-polishing machine?
No — these are hand-polishing discs only. Use Alpha® Advantage Floor discs for floors.
What sizes are available?
Ceramica Resin is offered in 3", 4", and 5" diameters. 4" is the most common.
Flexible or rigid backer pad?
Flexible (rubber) backers for curves and bullnose work; rigid backers for flat areas and straight edges.
Dark granite still looks gray after polishing — why?
Cloudy/gray areas mean a lower grit did not fully remove its predecessor’s scratches. Run the full #60→#3000 sequence with adequate passes.
My employees dislike working wet.
Fabrication is easier, faster, and much healthier when worked wet. Proper attire keeps operators dry.
What polishing powder do you recommend after #3000?
None — skip the sloppy chemicals. Finish with an Alpha® Ceramica Buff disc instead.
No product-specific videos are currently available from the manufacturer or DST.
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.
Specifications
| Size | 3", 4", 5" |
| Grit | #150, #300, #500, #1000, #2000, #3000 |