Bits are 30mm and 75mm (H4, H5, H6, H7, H8, H10, H12) length for increased range and precision. Size: H4, H5, H6, H7, H8, H10 & H12 (30mm/75mm). Hex, Allen, Torx & Spline. Tap & Die Sets. Socket Converter Reducer 1/2″ Female to 3/8″ Male Drive Impact Adaptor 02068.