... , 30mm, 32mm, 33mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm and so on. With different degree taper) Tapered Rod (Rod 19mm, 22mm, 25mm; Shank hex ... rods(chisel bit integral rod. 19mm, 22mm; Shank hex. 19mm, 22mm) B. Thread Button BitThread button bit (33mm, 35mm, 45mm, 51mm, 57mm, 64mm, 70mm ...