Rubber Diamond Square-Edge Wheel Burs

These square-edge diamond rubber wheel disc burs will cut, sand, and polish glass, gemstone, metal, porcelain, and other hard lapidary carvings. Use on your lapidary carvings with your Foredom or Dremel handpiece dry or with water. You can extend the life of your burs with the optional use of 412 Slick Lube diamond tool lubricant. Specifications Rubber diamond wheel burs are available in multiple sizes (± 1 mm): Small:  12 mm diameter with 2 mm thickness, permanently bonded mandrel Medium:  21.35 mm diameter with 3.5 mm thickness, installed to mandrel with a mounting screw Large:  26 mm diameter with 2.35 mm thickness, installed to mandrel with a mounting screw Burs are mounted to a 3/32 inch steel mandrel to fit Dremel, Foredom, and other quick-change and standard rotary handpieces compatible with 2.35 mm (3/32 in) shanks. Recommended speed range of 11000-14000rpm during use. Available in a range of color-coded diamond grits designed to be used in a sequence: Black Super-Coarse grit Green Coarse grit Blue Medium grit Red Fine grit Yellow Extra-fine grit Grey Ultra-fine grit Other rubber diamond bur shapes are available including: V-Wheels Points Radial Bristle Discs Premium Resin-Bond Nova Points