Flexible Shaft Bit Holder. Get bits into hard-to-reach areas with this 250mm Flexible Shaft Bit Holder. It can flex up to a full 90°. The Flexible Shaft Bit holder includes a magnetic bit holder that keeps bits and fasteners secure during use. Hexagon shank Designed for use with 1/4 in. hex shank bits 250mm length Extends bits into hard-to-reach areas, such as cabinets, drawers, and confined spaces Magnetic bit holder keeps fasteners and bits secure while driving Shaft flexes up to 90°