26 New Cratex Polishing Tools & 2 Mandrels. This is a new set of 26 assorted Cratex rubber polishing tools and 2 mandrels. These are perfect for light deburring, smoothing and polishing of metal, plastic, glass and porcelain. Each is made from a special formula of pure silicon carbide and oil-resistant rubber. These abrasives can be shaped with conventional wheel dressers and they do not harden or soften during use or storage. They fit a Dremel tool This set contains 24 wheels and points in 5/8" (16 mm), 7/8" (22 mm) and 1" (25.5 mm) sizes. Also included is 1 wheel mandrel and 1 point mandrel.