Alpha® PlasterKing® Polishing PadHigh-performance hook-and-loop diamond polishing pad engineered for smoothing and polishing pool plaster. The PlasterKing® system features a 5 mm thick diamond layer for long life and is offered in 7" and 9" diameters with #50 (yellow) and #100 (red) grits. Unlike many polishing pads, PlasterKing® leaves no black marking on the plaster surface. Designed for wet use, the pads pair with Alpha® PlasterKing® Backer Pads (e.g. PK710HH) and work with any standard hook-and-loop polisher of the pool contractor’s choice.Features High-performance plaster polishing pad with hook & loop attachment Available in 7" and 9" diameters with #50 and #100 grits 5 mm thick diamond layer for long pad life Leaves no black marking on the plaster surface Works on all polishers of the pool contractor’s choice Best cost-to-performance ratio for plaster polishing applications .dst-accordion { margin-top: 25px; border: 1px solid #FDDCC5; border-radius: 6px; overflow: hidden; } .dst-accordion-item { border-bottom: 1px solid #FDDCC5; } .dst-accordion-item:last-child { border-bottom: none; } .dst-accordion-toggle { display: none; } .dst-accordion-label { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700; color: #231F20; background: #fff; transition: background 0.2s; } .dst-accordion-label:hover { background: #FFF3EB; } .dst-accordion-label::after { content: '+'; font-size: 22px; font-weight: 700; color: #F15C22; transition: transform 0.3s; } .dst-accordion-toggle:checked + .dst-accordion-label { background: #FFF3EB; } .dst-accordion-toggle:checked + .dst-accordion-label::after { content: '\2212'; } .dst-accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 20px; background: #fff; } .dst-accordion-toggle:checked ~ .dst-accordion-content { max-height: 5000px; padding: 15px 20px 20px; } Models / Part Numbers Part No. Diameter Grit Color UPC PS070050 7" #50 Yellow 749173480188 PS070100 7" #100 Red 749173480195 PS090050 9" #50 Yellow 749173480201 PS090100 9" #100 Red 749173480218 How to Use Mount an Alpha® PlasterKing® Backer Pad (e.g. PK710HH for 7" pads) onto an M10-1.25 reverse-thread or 5/8"-11 polisher appropriate for your application. Press the PlasterKing® polishing pad squarely onto the backer’s hook-and-loop face, centered on the pad. Begin with #50 (yellow) for initial smoothing. Submerge or thoroughly wet the plaster surface — PlasterKing® is wet-use only. Polish at or below 5,500 RPM using light, even pressure. Let the diamonds do the work. Step up to #100 (red) for the final finish. Most pool contractors stop at #100 since water enhances color once the pool is filled. After use, rinse pads with clean water and air-dry away from heat. Specifications by Variant Yellow (#50 grit) — 7" (178 mm) — Hook & Loop — Diamond Polishing Pad — PS070050 Part No. PS070050 UPC 749173480188 Size 7" (178 mm) Type Diamond Polishing Pad Color Yellow (#50 grit) Attachment Hook & Loop Max RPM 5,500 RPM Recommended For Initial smoothing of pool plaster (wet use only) Packaged Weight 0.65 lbs Package Dimensions 7.25" x 7.25" x 7.25" Commodity Code 6804.21.9000 Country of Origin China Red (#100 grit) — 7" (178 mm) — Hook & Loop — Diamond Polishing Pad — PS070100 Part No. PS070100 UPC 749173480195 Size 7" (178 mm) Type Diamond Polishing Pad Color Red (#100 grit) Attachment Hook & Loop Max RPM 5,500 RPM Recommended For Finish polishing of pool plaster (wet use only) Packaged Weight 0.65 lbs Package Dimensions 7.25" x 7.25" x 7.25" Commodity Code 6804.21.9000 Country of Origin China Yellow (#50 grit) — 9" (229 mm) — Hook & Loop — Diamond Polishing Pad — PS090050 Part No. PS090050 UPC 749173480201 Size 9" (229 mm) Type Diamond Polishing Pad Color Yellow (#50 grit) Attachment Hook & Loop Max RPM 5,500 RPM Recommended For Initial smoothing of pool plaster (wet use only) Packaged Weight 0.95 lbs Package Dimensions 9.25" x 9.25" x 9.25" Commodity Code 6804.21.9000 Country of Origin China Red (#100 grit) — 9" (229 mm) — Hook & Loop — Diamond Polishing Pad — PS090100 Part No. PS090100 UPC 749173480218 Size 9" (229 mm) Type Diamond Polishing Pad Color Red (#100 grit) Attachment Hook & Loop Max RPM 5,500 RPM Recommended For Finish polishing of pool plaster (wet use only) Packaged Weight 0.95 lbs Package Dimensions 9.25" x 9.25" x 9.25" Commodity Code 6804.21.9000 Country of Origin China Common Specifications Property Detail Application Wet pool-plaster smoothing & polishing Diamond Layer 5 mm thick for long life Attachment Hook & loop Max RPM 5,500 Grits Offered #50 (yellow), #100 (red) Diameters Offered 7 in (178 mm), 9 in (229 mm) Surface Marking Leaves no black marks on plaster Recommended Backer Pads Alpha® PlasterKing® PK710HH (M10-1.25 reverse), MP758HL (5/8"-11), or MP658HL for tight corners Compatible Tools AIR-680UW underwater pneumatic polisher and any standard hook-and-loop polisher Related & Companion Products PlasterKing® Backer Pad 7" M10-1.25 Reverse Thread (PK710HH) Alpha® AIR-680UW Underwater Pneumatic Polisher Alpha® Rotary Backer Pads (MP758HL, MP658HL) Alpha® Wool Pads Alpha® Diamond Face Foam Pads FAQs What backer pad does Alpha® recommend for PlasterKing®?MP758HL is the recommended backer pad for the PlasterKing® polishing pads. MP658HL may be used when more flexibility is needed to polish tight corners. For pneumatic underwater polishers (e.g. AIR-680UW), use the reverse-thread PK710HH backer.Can I use PlasterKing® dry?No. PlasterKing® is wet-use only. The bonding system is engineered for wet performance, and dry use will damage the diamond layer and shorten pad life.Can PlasterKing® be used with the AIR-680UW underwater polisher long-term?Yes, PlasterKing® pads are suitable for long-term use with the Alpha® AIR-680UW underwater pneumatic polisher.Are electroplated PlasterKing® diamond pads available?Most likely, Alpha® will begin offering electroplated PlasterKing® pads for the next spring season. Contact Dynamic Stone Tools to confirm availability.Why are only two grits (#50 and #100) offered?Pool contractors typically stop polishing at #100 grit since once water covers the plaster, the color is enhanced and higher grits offer no practical benefit.Is there seasonality for pool-plaster polishing?Yes. Most pool applications occur April through Memorial Day, and October is also a busy season — before and after pool season is when contractors do most polishing. VideosNo product-specific videos are currently available from the manufacturer or DST. Documentation 📄 PlasterKing® Pads and Backer Pads Flyer 📄 New From Alpha® 2026 — Hardscape ⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.
