Retract thread button bits

With the top quality of alloy steels imported from USA and the best carbides made in China, we produce all retract threaded button bits by hot press technology.

SINODRILLS Retract thread button bits

Thread size: R32, SSR32, R35, SSR35, R38, T38, T45, T51, SST58, SST68, SGT60.

Diameter: 51mm to 152mm.

Face tape: Flat front, Drop center front, Uni-face

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