Kelly Bushings designed and manufactured in accordance with API 7K and other technical standards. The loaded parts are made of good-quality alloy steel.
Odel Type Way of Drive Square(in) Hex(in)
HDS Heavy Square Drive 3-6 3-6
27-HDP Pin Drive 3-6 3-6
20-HDP Pin Drive 3-6 3-6
RTM4 Medium Square Drive 2 1/2??5 1/4 3-4 1/4
20-MDP Pin Drive 2 1/2--4 1/4 3-4 1/4
17-MDP Pin Drive 2 1/2--4 1/4 3-4 1/4
RTS4 Light -duty Square Drive 2 1/2--4 1/4 3-4 1/4

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