We are offering drifter drill rod.Thread button bit1)thread:r22, r25, r28, r32, r35, r38, t38, t45, t51, st58, t602)diameter:42-127mm retrac button bit1)thread:r22, r25, r28, r32, r35, r38, t38, t45, t51, st58, t602)diameter:42-127mm thread cross bit1)thread:r22, r25, r28, r322)diameter:33-64mm shank adaptors1)thread:r28, r32, r38, r45, t45, t51, st58, st68, hl64