<p>Diamond hand profilers B 3/16" fit on any variable speed grinders or polishers with 5/8"-11 thread spindle. They are designed for 3/16" demi-bullnose edge profiling on slabs of natural stones, engineered stones and concrete countertops. Adopting the latest "Vacuum Brazed Technology", our profilers give you aggressive grinding action and longevity, without losing the shape of the profile, unlike the Sintered profilers on the market.A nylon guide on the top of the bits slides along the surfaces steadily and the rotary touch bearing controls the depth smoothly. They have internal water feed for cooling. Optimal speed is 3,500-4,000RPM. Can be used wet or dry.</p><p>We have many different size and shape hand profilers, such as bullnose, demi-bullnose, ogee, bevel and zero tolerance, you can find them on DAMO storefront.</p><p>You may buy seperately our <strong>adapter 5/8"-11 to M14</strong> to use with power tools with M14 thread spindle.</p><p>Position 2 profiler of medium diamond grit is always recommended to be used after coarse Position 1 for better polishing result and higher efficiency.</p><p>We DAMO Diamond Tools, LLC holds exclusive distribution to DAMO Trademark products as you can see clearly marked from the picture on the product listing.</p>