1,tci tricone bit.tci rock bit 2,certified by API 3,best price 4,wide size ... time The main products we manufactured are bellows 1, tricone bit include the steel tooth and tung , we can also produce ... series of the bits .2, PDC bit include the TSP bit, natural diamond bit and impregnate bit.3, the number of blade scope is ... /2”, 12-1/4”, 6”, 17-1/2”,4, the Rotary speed is form 10 ~300 r/min.We have the ...