6′ ′ TCI Bits for Very Hard Rocks Beijing Superior Drilling Equipment Co., Ltd. Base Info Model NO.：152.4mm IADC637 tri-cone bitMaterial：Tungsten CarbideUsage：Well DrillingTrademark：FTransport Package：Paper BoxSpecification：160mm*170mm*285mmOrigin：ChinaHS Code：82071910 Description Pre：8 1/2 Inch Tri-Cone Bit IADC 637 for HDD Rock Reamer Next：190mm TCI Drill Bit for Gas Well Drilling
