... 4"46, 6, 7, 11, 12 —MAXDRILL Tapered Cross Bits Carbides shapes are cross type on drill bits. Same as taper chisel ... different taper degree and diameters. Meanwhile cross bits are Usually all carbide tips, including chisel, cross or button types, before carbides run ... to be sharper when carbides are wear out. (1) Type: cross bits(2) Size: 19mm, 22mm, 25mm(3) Diameter: 26-100mm ...