This mechanic's bit set from Draper includes 47 hex and spline bits suitable for a variety of fasteners, including Torx fixing systems commonly used in automotive and manufacturing applications. Each bit is crafted from high-grade chrome vanadium steel with a shot-blasted finish, ensuring long service life. The bits are hardened and tempered to enhance strength and toughness, making this set an ideal choice for any workshop. It includes a 10mm bit holder hexagon for both 3/8" and 1/2" sq. drives. The set also contains 7 x 30mm and 7 x 75mm Draper TX-STAR bits (T20, T25, T30, T40, T45, T50, T55), 5 x 30mm and 5 x 75mm spline bits (5, 6, 8, 10, 12mm), and 7 x 30mm and 7 x 75mm hexagonal bits (4, 5, 6, 7, 8, 10, 12mm). The set is supplied in an impact-resistant plastic case for easy portability.