The R32 45mm button bits including the 7 buttons and 9 buttons which always used for tunneling and drifting under mining, the bits are always used for R32-H32-R32 rods etc.

R32 45mm bit specifications

10pcs R32 45mm samples have sent to the Mexico market for testing , the client compared our bits with original Mitsubishi, Sandvik, Atlas copco and Epirco, our drill bits feedback is almost same as their performance even better