CRL Amazing Glazing 1" Belgian Threaded Diamond Countersink Diamond Saw Blades When the lamp is held

When the lamp is held to the air side

Suitable for continual immersion in water with the appropriate primer

Operating Time : + 30 Hours Continuous (Red Only)

They are large enough to do the work

CRL Amazing Glazing 1" Belgian Threaded Diamond Countersink Diamond Saw Blades When the lamp is heldMetal 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.