Roller Kelly bushing

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Product Parameters
Model GBX GBX GBX GBX GBX GBX GBX GBX
Kelly 2 1/2″ 2 7/8″ 4″ 4 1/4″ 4 1/2″ 5 1/4″ 5 1/2″ 6″
Kelly type square, hexagonal
Drive square,pin
max torque (N.m) 1700-2700

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