Buwico&reg; 12" 300mm Flexible Shaft Crankshaft Drill Screwdriver Extension Bar Drill Driver Shaft Flexible outor shield protects your hand while inside shaft rotates Bends,twist and turns to use drill into tight and confined spaces Measures 300mm (12") in length. Suitable for 1/4" drive power bits. For use in screwdrivers and power screwdrivers.