$ 28.84
$ 28.84
$ 28.84
Alpha® PlasterKing® Backer Pad — 7" M10-1.25 Reverse Thread
Hook-and-loop backer pad engineered for the Alpha® PlasterKing® pool plaster polishing system. This DST-stocked configuration features an M10-1.25 reverse-thread arbor for pneumatic underwater polishers (compatible with the Alpha® AIR-680UW and similar reverse-thread tooling) so the pad stays locked under wet, submerged use. Pairs with the PlasterKing® 7" #50 and #100 diamond polishing pads (PS070050, PS070100) to deliver a uniform, contractor-grade finish on freshly-cured pool plaster.
Features
- 7" working diameter sized for PlasterKing® PS070050 and PS070100 polishing pads
- M10-1.25 reverse-thread arbor — locks under load on pneumatic underwater polishers
- Hook & loop face for fast pad changes between grits
- Built for wet pool-plaster polishing — not for dry use
- Compatible with PlasterKing® diamond polishing pads and most 7" hook-and-loop foam, wool, microfiber pads, and sandpaper
| Part No. | Diameter | Thread | Use | UPC |
|---|---|---|---|---|
| PK710HH | 7" | M10-1.25 Reverse | Backer for PlasterKing® polishing pads | 749173480225 |
- Thread the backer pad onto an M10-1.25 reverse-thread polisher (left-hand thread). Snug by hand — the working load tightens the connection.
- Press a PlasterKing® #50 (yellow) or #100 (red) hook-and-loop polishing pad squarely onto the face, centered on the backer.
- Submerge or wet the plaster surface. PlasterKing® is wet-use only.
- Polish at or below 5,500 RPM with light, even pressure. Let the diamonds do the work.
- After use, rinse the backer pad and pads with clean water and air-dry away from heat.
7" — Hook & Loop face — Hook & Loop Backer Pad — PK710HH
| Part No. | PK710HH |
| UPC | 749173480225 |
| Size | 7" |
| Type | Hook & Loop Backer Pad |
| Attachment | Hook & Loop face |
| Thread | M10-1.25 Reverse (left-hand) |
| Max RPM | 5,500 RPM |
| Recommended For | Backing pad for PlasterKing® 7" diamond polishing pads (PS070050, PS070100) |
| Country of Origin | See package label |
| Property | Detail |
|---|---|
| Application | Wet pool-plaster polishing |
| Working Diameter | 7 in (178 mm) |
| Arbor Thread | M10 × 1.25 reverse / left-hand |
| Pad Attachment | Hook & loop |
| Max RPM | 5,500 |
| Recommended Tools | Alpha® AIR-680UW underwater polisher and other M10-1.25 reverse-thread polishers |
| Companion Pads | PlasterKing® PS070050 (#50, yellow), PS070100 (#100, red) |
Why a reverse-thread (M10-1.25 left-hand) backer pad?
Pneumatic underwater polishers such as the Alpha® AIR-680UW use a reverse-thread spindle so the backer pad self-tightens under load while polishing. Using a standard right-hand thread backer on a reverse-thread tool will cause the pad to unthread mid-cut.
Which PlasterKing® polishing pads fit this backer?
Both Alpha® 7" PlasterKing® polishing pads — PS070050 (#50, yellow) and PS070100 (#100, red) — attach via the hook-and-loop face.
Can I use PlasterKing® dry?
No. PlasterKing® is wet-use only. All pool contractors polish wet, and dry use will damage the diamond layer and shorten pad life.
Is this the same as the MP758HL backer pad?
No. MP758HL is the Alpha® 5/8"-11 (standard right-hand) backer pad for rotary polishers. PK710HH is a DST-stocked M10-1.25 reverse-thread variant for pneumatic underwater polishers.
Why does Alpha® offer only 2 grits for PlasterKing®?
Pool contractors typically finish at #100 grit because higher reflective finishes are unnecessary once the pool is filled with water.
Is there seasonality for pool-plaster polishing?
Yes. Most pool-polishing work happens before and after pool season, so demand for PlasterKing® and its backer pads peaks in spring and fall.
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.