Sintered Diamond Finger Bits 1)No Chipping 2)CNC diamond Segments Finger bits for granite,drill bit 3)Gas 1/2",Dia 22,25mm Sintered Diamond Finger BitsDesigned for fast grinding and wet use only. For CNC and Radial Arm machines. Center waterfeed holes in each bit.applications:for fabrication of granite connection:GAS1/2" for CNC machineswe provide Milling Pins,Drill bit,Router bit,Finger bit, ...