CRL Amazing Glazing 1/2" Belgian Threaded Diamond Countersink Steel & Brass Tube Drill Bits Both replacement heads are sold

Both replacement heads are sold each

always follow safety precautions and wear the proper safety gear

Ingredient Disclosure

Wheel diameter is 6" (152 mm)

The extra thick 5/16" (8 mm) square smooth piston rod with T-pull allows maximum gunning pressure even on stiff materials

CRL Amazing Glazing 1/2" Belgian Threaded Diamond Countersink Steel & Brass Tube Drill Bits Both replacement heads are soldMetal 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.