With the Facom 678006 stepped iso drill bit, you create precise, clean holes in sheet metal and electrical enclosures quickly and efficiently. Thanks to the self-centering tip, you can start drilling immediately without a pilot hole or constant bit changes. Covering a versatile range from 6.5 to 40.5 mm, it easily handles sheet metal up to 4 mm thick. The 10 mm cylindrical shank with 3 flats provides a positive drive in your drill chuck, preventing slippage and micro-jamming under load. This allows you to drill and deburr accurate holes for cable glands with complete control.