Blue Tungsten Carbide Buttons , Tipped Tapered Drill Bits For Rock Drilling Product Characteristic: 1 .Button bit taper angle: 7°,11°,12° 2. Length: 50/55/71/80 mm 3. Diameter: 20-45 mm 4. Button bit ...View More
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Blue Tungsten Carbide Buttons , Tipped Tapered Drill Bits For Rock Drilling