B47K22H 50HRC Tungsten Carbide Insert Bit , Carbide Bullet Teeth For Hard Rock Drilling 1.Material:Tungsten carbide alloy 2.Various hardness available...
High Strength 1.2kg Auger Bit Replacement Teeth , Single Cone Bit B47K22H 1.Material:Tungsten carbide alloy 2.Various hardness available:The most cost...
High Efficiency Long Serving Time 52 HRC Rock Drill Bit B47K22H 1.Material:Tungsten carbide alloy 2.Various hardness available:The most cost-effective ...