Extraction head set, 30 mm outer diameter, with MK2 shank and chisels. The extraction head has a diameter of 30 mm. Two mounts are included with one MK2 shank and one straight 12mm shaft. The set also includes an 8-piece chisel set (HSS with 6 mm shank) and Allen key for tool change. Mounting hole: 6 mm. Centre distance between holes: 9 mm. Transverse hole: 6 mm. Travel: 8 mm. Minimum bore: 6 mm. Maximum bore: 45 mm. Mounting thread: 10 x 1.5 mm.