... -100mm. (3) Taper:degree 4"46, 6, 7, 11, 12 —MAXDRILL Tapered Chisel BitTapered Chisel Bit is generally matched with the ... electricity, traffic, tunnel, quarry stone project etc(1) Type: chisel bits(2) Size: 19mm, 22mm, 25mm(3) Diameter: 26 ... -100mm.(4) Taper: degree 4°46′,6°, 7°, 11°, 12°.(5) Package: in ... both cross and button designs. MAXDRILL Taper chisel bit