ARTU 3/16 In. x 3-1/2 In. Cobalt and Tungsten Carbide Glass & Tile Drill Bit

Unique point grinding allows for extreme low drilling pressure with excellent centering. Drill bit will not walk. Tape or center punching is no longer needed. Nice, clean holes with little to no chipping and long drill bit life. Ground double flute ensures fast and efficient removal of the drill dust and prevents clogging. The bit is ideal for drilling porcelain tiles up to a scratch hardness of 8. The unique 4-face point grinding extends the drill bit life. Drill motor must be operated at 400-600 rpm (revolutions per minute). Includes pilot bit 5/32" diameter.

Features

• Flat bottom parabolic flute ensures fast and efficient removal of the drill dust and prevents clogging
• Drill bit shank is made from the finest chrome vanadium steel
• Extreme low drilling pressure with excellent centering prevents walking - tape or center punching no longer needed
• Diamond ground PORC+ cuts nice, clean holes with very little or no chipping