123 New Cratex Polishing Tools. This is a new set of 123 Cratex rubber polishing tools. 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 can be shaped with conventional wheel dressers and they do not harden or soften during use or storage. Includes medium, pumitex, fine and extra fine grit polishers. Fit a Dremel tool. You receive: 80 Tapered edge wheel polishers that measure approximately 5/8" (16 mm) in diameter 20 Straight wheel polishers that measure approximately 7/8" x 1/8" (22 x 3 mm) 20 Bullet point polishers that measure approximately 1" x 5/16" (25.5 x 8 mm) 2 Wheel mandrels that have 3/32" (2.5 mm) shanks 1 Point mandrel that has a 3/32" (2.5 mm) shank.