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14mm Full Covered Conical Insert High Hardness Roller Cone Drill Bit

14mm Full Covered Conical Insert High Hardness Roller Cone Drill Bit

14mm Full Covered Conical Insert High Hardness Roller Cone Drill Bit

14mm Full Covered Conical Insert High Hardness Roller Cone Drill Bit Characteristics: ♥ Cutting Structure : The reamer mainly consists of four or more cones. Cutting Structure with premium tungsten ...

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