button bit 1.the taper angle can be 4, 5, 6, 7, 11, 12 degree 2.the taper hole big Dia. :15~25mm ... machine at highchisel oblique fake wing rock drill button bitBit Dia.mmTaper angleTaper hole big Dia.mmCarbide size Width ×height(mm)Model204 ... can be 4°,5°, 6°, 7°, 11°, 12°, the taper hole big Dia. Can be 15~25mm, besides, we can produce ...