Rock Cross Bit (Taper Type) Diameter: 32mm - 55mm Taper: 4.8, ... of rock drilling tools includes taper chisel bits, cross bits, button bits, tapered drill rods, integral ... integral steels, pick rods, thread cross bits, thread button bits, retrac button bits, extension rods, shank adapter, coupling ... diamater (D)TaperWhter hole(d)mmPart onmminCrossl Type Bits321 17/647°322S132-722341 11/327°322S134 ...