T45 Tungsten Carbide Drill Bits Suppliers &
Thread button bits: Description: For different rock hardness mining,tunneling,quarrying projects. Material: Alloy steel bar and tungsten carbide bit: MOQ: trial order 1-5pcs: Body Type: Normal type and retract type: Thread type: R25,R28,R32,R38,T38,T45,T51,ST58,ST68: Diameter: 32mm-152mm: Button bit shape: Spherical and Ballistic: Face shape: Flat shape and Drop-center shape
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