Introductions and features of the tungsten carbide chisel and tapered button bits: 1.Chiesl Bit Bit Diameter 30-42mm,Taper7 degree 2.Cross Bit Bits .....
Our tapered button drill bit size from 32mm-42mm, tapered 4, 5, 6, 7, 11 and 12 degree, with 4, 5, 6 and 7 buttons. The button shapes of our button .....