CRL Amazing Glazing 1/2" Belgian Threaded Diamond Countersink Sandblasting Tools Includes Nylon Scrub Pad

Includes Nylon Scrub Pad

will mark steel

1/2" (12 mm)

Available in 3/8" and 1/2" (10 and 12

and can be painted

CRL Amazing Glazing 1/2" Belgian Threaded Diamond Countersink Sandblasting Tools Includes Nylon Scrub PadMetal Bond Diamonds Straight Shank or Belgian Type Mounts Chip Free 90 Tapers This CRL Diamond Countersink features a medium grit diamond for grinding precise, chip free, 90 tapers into existing holes in glass. Versatile because it can be used on any hole size up to the maximum countersink diameter. Run at medium speeds, the countersink must be applied to the glass so it touches the circumference evenly. It can also be used on marble and granite.