HJG thread button drill bits are made by high quality alloy steel bar and tungsten carbides.
1) Thread connection: R22, R25, R28, R32, R35, R38, HL38, T38, T45, T51, T60, ST58, ST68
2) Bit Size: 33mm-152mm
3) Bit Face Design: YK05
4) Application: Small hole drilling, Drifting and Tunneling, Bench and Production Driling.
Parameters for Regular Design
Factory View