Tricone Bit for Water Well Beijing Superior Drilling Equipment Co., Ltd. Base Info Customized:CustomizedStandard:AISI, APILength:Taper-lengthType:Drill BitsMaterial:High Speed SteelUsage:Well DrillingTrademark:SuperiorTransport Package:Wooden BoxOrigin:HebeiHS Code:82071910 Description Pre:Superior Roller Cones IADC 637 for Rock Reamer Next:5 Blade 13mm Cutter Oil & Gas Drilling Steel Body PDC Bits