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Size
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Type
Alpha® Rotary Backer Pads
Soft molded urethane backer pads engineered for rotary polishers. The flexible urethane edge absorbs vibration and rebounds smoothly for contour work, while the 5/8"-11 thread fits standard rotary polishers. Available in five sizes (3" through 8") with Hook & Loop attachment for fast pad changes, plus an 8" Adhesive (PSA) version for pressure-sensitive pads.
Features
- Soft molded urethane with flexible edge
- Urethane backing for greater flexibility and excellent polishing
- Ideal for contour polishing
- Compatible with foam, wool, and microfiber pads
- Hook & Loop attachment for fast pad changes (HL models)
- Pressure-sensitive adhesive surface (GL/PSA model)
- Well-balanced for smooth polishing
- Absorbs vibrations with great rebound performance
| Part No. | Size | Attachment | Thread | UPC |
|---|---|---|---|---|
| MP358HL | 3" | Hook & Loop | 5/8"-11 | 749173561078 |
| MP558HL | 5" | Hook & Loop | 5/8"-11 | 749173561085 |
| MP658HL | 6" | Hook & Loop | 5/8"-11 | 749173561092 |
| MP758HL | 7" | Hook & Loop | 5/8"-11 | 749173561177 |
| MP858HL | 8" | Hook & Loop | 5/8"-11 | 749173561061 |
| MP858GL | 8" | Adhesive (PSA) | 5/8"-11 | 749173561054 |
- Thread the backer pad onto your rotary polisher’s 5/8"-11 spindle. Hand-tighten firmly.
- For Hook & Loop (HL) models: press the foam, wool, or microfiber pad squarely onto the velcro face until fully seated.
- For Adhesive (GL/PSA) models: peel the liner from a PSA pad and press it firmly onto the adhesive face. Replace pad when adhesion weakens.
- Start at a low RPM to seat the pad and check balance before applying polishing compound.
- Apply even pressure during polishing — the urethane edge will flex to follow contours.
- After use, brush off debris and store flat in a clean, dry area to preserve adhesion.
3" — Hook & Loop — MP358HL
| Part No. | MP358HL |
| UPC | 749173561078 |
| Size | 3" |
| Attachment Type | Hook & Loop |
| Thread | 5/8"-11 |
| For Use With | Foam, Wool, Microfiber Pads & Sandpaper |
| Packaged Weight | 0.10 lbs |
| Package Dimensions | 6" x 2" x 7" |
| Commodity Code | 3926.90.9090 |
| Country of Origin | China |
5" — Hook & Loop — MP558HL
| Part No. | MP558HL |
| UPC | 749173561085 |
| Size | 5" |
| Attachment Type | Hook & Loop |
| Thread | 5/8"-11 |
| For Use With | Foam, Wool, Microfiber Pads & Sandpaper |
| Packaged Weight | 0.25 lbs |
| Package Dimensions | 10" x 2" x 11" |
| Commodity Code | 3926.90.9989 |
| Country of Origin | China |
6" — Hook & Loop — MP658HL
| Part No. | MP658HL |
| UPC | 749173561092 |
| Size | 6" |
| Attachment Type | Hook & Loop |
| Thread | 5/8"-11 |
| For Use With | Foam, Wool, Microfiber Pads & Sandpaper |
| Packaged Weight | 0.35 lbs |
| Package Dimensions | 10" x 2" x 11" |
| Commodity Code | 3926.90.9989 |
| Country of Origin | China |
7" — Hook & Loop — MP758HL
| Part No. | MP758HL |
| UPC | 749173561177 |
| Size | 7" |
| Attachment Type | Hook & Loop |
| Thread | 5/8"-11 |
| For Use With | Foam, Wool, Microfiber Pads & Sandpaper |
| Packaged Weight | 0.45 lbs |
| Package Dimensions | 10" x 2" x 11" |
| Commodity Code | 3926.90.9989 |
| Country of Origin | China |
8" — Hook & Loop — MP858HL
| Part No. | MP858HL |
| UPC | 749173561061 |
| Size | 8" |
| Attachment Type | Hook & Loop |
| Thread | 5/8"-11 |
| For Use With | Foam, Wool, Microfiber Pads & Sandpaper |
| Packaged Weight | 0.60 lbs |
| Package Dimensions | 10" x 2" x 11" |
| Commodity Code | 3926.90.9989 |
| Country of Origin | China |
8" — Adhesive (PSA) — MP858GL
| Part No. | MP858GL |
| UPC | 749173561054 |
| Size | 8" |
| Attachment Type | Adhesive (PSA) |
| Thread | 5/8"-11 |
| For Use With | Pressure Sensitive Adhesion pads |
| Packaged Weight | 0.60 lbs |
| Package Dimensions | 10" x 2" x 11" |
| Commodity Code | 3926.90.9989 |
| Country of Origin | China |
| Property | Detail |
|---|---|
| Material | Molded urethane (soft) with flexible edge |
| Thread | 5/8"-11 (standard rotary polisher arbor) |
| For Use On | Rotary Polishers |
| Available Sizes | 3" · 5" · 6" · 7" · 8" |
| Attachment Types | Hook & Loop (HL) · Adhesive / PSA (GL) |
| Country of Origin | China |
- BMP-700 — Brushless Variable Speed Rotary Polisher (compatible 5/8"-11 spindle)
- Alpha Microfiber Pads — for final polishing
- Alpha Wool Pads — for cutting / compound stage
- Diamond Face Foam Pads — for surface refinement
No frequently-asked questions are currently published for this product. Contact us for application help — e-commerce@dynamicstonetools.com.
No product-specific videos are currently available from the manufacturer or DST.
No data sheets are currently published by the manufacturer for this product.
⚠ WARNING: This product can expose you to chemicals including Nickel and Carbon Black, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov. Always wear appropriate PPE.
Especificaciones
| Size | 3", 5", 6", 7", 8" |
| Type | Hook & Loop, Adhesive |





