Alpha® Twistouch™ System — Twist-Lock Backer & Double Magic for Hand PolishingThe Alpha® Twistouch™ System is a safe, long-lasting hand-polishing platform built around a quick “twist and lock” adapter. It fits most polishers with a 5/8"-11 spindle and center water-feed, and accepts hook-and-loop backed accessories — Twistouch Turbo, Ceramica wheels and any standard hook-&-loop polishing disc. The system is offered in two backer sizes (3" and 4") plus a Double Magic top layer that lets you change worn discs in seconds. The Backer/Magic Set bundles one 4" Backer Pad with one 4" Double Magic for a complete starter assembly.Features A Versatile and Safe Polishing System Quick, Easy and Long Lasting Fits Most Polishers with 5/8”-11 Spindle and Center Water-Feed System Increase Performance and Improve Productivity Available in 3” and 4” Accepts Hook and Loop Backed Accessories .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 Description Max RPM UPC TW4BDK 4" Backer/Magic Set 4,000 RPM 749173471643 TW4BRG 4" Twistouch Backer Pad 4,000 RPM 749173471650 TW4DBM 4" Twistouch Double Magic 4,000 RPM 749173471667 How to Use Thread the Twistouch Backer Pad onto your 5/8"-11 polisher spindle and hand-tighten. Press a Twistouch Double Magic disc onto the backer face — the twist-and-lock design seats the disc securely. Apply your hook-and-loop polishing pad (Twistouch Turbo, Ceramica or compatible) onto the Double Magic surface. Confirm no-load RPM does not exceed 4,000 RPM. Run wet with center water-feed for stone polishing; dry running is acceptable for fast dressing only. Use light, even pressure and keep the pad moving along the work. To change pads, simply peel and replace the hook-&-loop disc; replace the Double Magic when its fibers are worn flat. Specifications by Variant Twistouch Backer/Magic Set 4" — TW4BDK Part No. TW4BDK UPC 749173471643 Type Twistouch Backer/Magic Set 4" Max RPM 4,000 RPM Packaged Weight 0.30 lbs Commodity Code 6804.21.0000 Country of Origin Japan Twistouch Twistouch Backer Pad 4" — TW4BRG Part No. TW4BRG UPC 749173471650 Type Twistouch Twistouch Backer Pad 4" Max RPM 4,000 RPM Packaged Weight 0.20 lbs Commodity Code 6804.21.0000 Country of Origin Japan Twistouch Twistouch Double Magic 4" — TW4DBM Part No. TW4DBM UPC 749173471667 Type Twistouch Twistouch Double Magic 4" Max RPM 4,000 RPM Packaged Weight 0.10 lbs Commodity Code 6804.21.0000 Country of Origin Japan Common Specifications Property Detail Type Twist-lock hook-&-loop backer / Double Magic interface Spindle 5/8"-11 with center water-feed compatible Available Sizes 3", 4" Max RPM 4,000 RPM Compatible With Twistouch Turbo, Ceramica, and any standard hook-&-loop polishing pad Use Wet or dry, hand-held polishing Commodity Code 6804.21.0000 Country of Origin Japan Related & Companion Products Alpha® Ceramica Polishing Wheels Alpha® Twincur™ GEM-V Hook-&-Loop Polishing Pad Alpha® AWS Wet Polisher (5/8"-11 spindle) FAQs What is the Twistouch System for?It is the backer / interface layer for Alpha’s hand-polishing line. The Backer Pad threads onto your polisher; the Double Magic locks onto the backer; and your hook-&-loop polishing pad (Twistouch Turbo, Ceramica, etc.) sticks to the Double Magic.What is the difference between the Backer Pad and the Double Magic?The Backer Pad (TW3BRG / TW4BRG) threads onto the polisher spindle. The Double Magic (TW3DBM / TW4DBM) is the hook-&-loop interface disc that snaps onto the backer and holds your polishing pad.What is in the TW4BDK Backer/Magic Set?One 4" Twistouch Backer Pad plus one 4" Twistouch Double Magic — everything needed to start polishing once you add a hook-&-loop pad.Will it fit my polisher?Any polisher with a 5/8"-11 spindle and center water-feed is compatible. This covers most popular wet polishers used in the stone trade.What is the max safe RPM?4,000 RPM.Can I use Ceramica or Twincur GEM-V pads on the Twistouch Backer?Yes — any standard hook-&-loop backed pad will adhere to the Double Magic layer.Wet or dry?Run wet for stone polishing — the spindle is designed for center water-feed. Dry operation is acceptable for short dressing passes only.How do I replace a worn Double Magic?Peel the Double Magic off the Backer Pad and press a new one in its place. Backer pads typically outlast multiple Double Magic discs. VideosNo product-specific videos are currently available from the manufacturer or DST. DocumentationNo data sheets currently published by the manufacturer for this product. ⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.