Toolzone Flexible Drill Extension ShaftThis flexible shaft fits directly into the chuck of all electric drills. The overall length is 1000mm (40″) both ends reinforced with anti-kink sleeves complete with 6mm (1/4″) key-less chuck puts power into the most inaccessible places. Use with drills, wire brushes, countersinks, flap wheels, mounted stones and grinding wheels. Suitable for drill bits up to 7mm in diameterl for 1001 jobs.. on the car, in the home, workshop or garage.