Coupling for Assembly Type (3 Part) Diamond Core Drill Bit, 24mm-500mm

An accessory for assembly type diamond core bit. We provide various screw threads coupling for different drilling machines. High reliability and durable.

DIAMETER ： 24mm - 500mm

THREAD ： 1-1/4"-7 ； W 1-1/4" ； 5/8"-11 ； G 1/2"