We are offering drilling tools.
Thread button bit
1)thread:r22,r25,r28,r32,r35,r38,t38,t45,t51,st58,t60
2)diameter:42-127mm
retrac button bit
1)thread:r22,r25,r28,r32,r35,r38,t38,t45,t51,st58,t60
2)diameter:42-127mm
thread cross bit
1)thread:r22,r25,r28,r32
2)diameter:33-64mm
shank adaptors
1)thread:r28,r32,r38,r45,t45,t51,st58,st68,hl64