The Universal Drilling Guide MASTER M6-M10 from Pichler Tools is designed for safe drilling out of broken stud bolts with thread sizes M6 through M10. The HARDOX-Drills are suitable for tough and hard materials, with an optimized cutting edge and special, flat spiral angle at 135 degrees. The Carbide HEAD-CUTTER is ideal for levelling and smoothing the break-off edge of the stripped screw, with diameter 4.8mm by 50mm, 6mm by 50mm, and 6mm by 105mm.