China High Quality Tungsten Carbide 8 Tips 7 Degree Mining
Tungsten Carbide 8 Tips 7 Degree Mining Tapered Button Bits For Rock Drilling. 1, 8 tips 7 degree button bit use for hard rock drilling 2, We supply standard sizes for Atlas copco and Xinhai size 3, Except for 8 tips button bits, we also supply 4 tips, 5 tips, 6 tips, 7 tips with 7, 11, 12 degree.



































