DIAMOND DRILL BITS
Diamond drill bits for drilling stone, glass, pearl and ceramic. This jobbers-length series has a straight shank that is just a little smaller than the drilling diameter. This clearance allows you to drill deeper holes.
When using diamond drills you are technically grinding. For best results you will want to get your surface speeds up around 3,000 – 5,500 SFPM.
SFPM = RPM x DIAMETER x 0.262
RPM = (SFPM x 3.82) divided by DIAMETER
Pack of 5
ALWAYS WEAR EYE PROTECTION WHEN USING A DIAMOND DRILL BIT