Vacuum Brazed Diamond Finger Bits for Stone Connectiont:round shank, 1/2GAS, M14, 5/8-11 thread Vacuum Brazed Diamond Finger Bits for StoneConnection part: round shake, 1/2GAS, M14, 5/8-11 threadThe size can be done as requestFeature1. high efficiency and long working life2. No Bouncing or wobbling3. No Deformation in processingApplication: Stone, CNC milling, ARC Profiling