RockPecker CNC diamond core bits have been designed specifically for granite, marble, quartzite and engineered stone. With a 1/2 gas arbor to fit al machines, the RockPecker core bits have been built to core perfectly smooth, chip-free holes on all thickness materials. They have 1mm thick rim so these thin wall core bits will drill very clean and fast through all materials, and they have a long life.

Weha RockPecker 3″ CNC Core Bit Specifications:
Total length: 4 3/16″ (106mm)
Drilling depth: 2 9/16″ (65mm)
Segment dimensions: 1mm x 10mm
1/2 Gas male CNC Thread
Recommended RPM: between 750-2800 rpm
Feed rate: between 3″-4″ per minute