Easy pre-counterboring. The deburring countersink is used for pre-counterboring with flush screw fittings. The transverse hole drilling leads to a burr-free, clean result with smooth operation. Transverse hole drilling for optimised chip discharge and a burr-free result. Easy positioning thanks to distinct tip. Smooth operation and vibration-free working. For long-chipping materials, non-ferrous metals, plastics, softwood and hardwood. For pre-counterboring and flush screwing. for countersinks. for Festool cordless drills and cordless percussion drills with FastFix tool reception and WH-CE CENTROTEC tool chuck