China 64mm Rock Bits R38 Thread Button Drilling Bit ...
64mm rock bits R38 thread button drilling bit . Description . 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 thread button bits . Thread size: R32, SSR32, R35, SSR35, R38, T38, T45, T51, SST58, SST68, SGT60. Diameter ...
Get Price