... Drilling tools,Mining tools,Roller bits,Tricone bits,Drill bits Steel tooth bitParameterDescription:ParameterSeries: rubber rings-rolling bearings (SDT×××G)Description ... high temperature up to 250°C is utilized.5. For steel tooth bit, the tooth surface is hardfaced with new type ... /837.943.312 1/4311.2SDT1276 5/837.943.3 Steel Teeth Roller bit