Simplified Roller Bit with Low Budget for Piling Beijing Superior Drilling Equipment Co., Ltd. Base Info Customized：CustomizedStandard：APILength：Stub-lengthType：Center Drill BitMaterial：Tungsten CarbideTrademark：SUPERIORTransport Package：Wooden CaseOrigin：ChinaHS Code：8207191000 Description Pre：11 5/8" Top Sale Oil Tricone Bit Next：12 1/4" PDC Drill Bit for Oil/Well Drilling IADC 215
