The Drill Bit Extension is a shaft connecting link made from PP plastic, carbon steel, and steel. It features a hexagonal shank and head measuring 6.35 mm (1/4 inch) and is available in lengths of 200mm, 250mm, 275mm, 300mm, and 400mm. This tool flexes to access tight spaces and crevices, ideal for repairs and installations in computer cases, furniture, and similar applications. It is and includes one piece per package. Note: Use only with charging drills or air batches; avoid hand drills and hammer drills. Adjust drill torque moderately to damage to the shaft.