General description Sealey Security TRX-Star/Hex/Ribe/Spline Bit Set includes 56 pieces designed for 3/8" and 1/2" square drive applications. Made from Chrome Vanadium 6150 steel, these bits are hardened to 52-53 HRC and tempered for enhanced strength, making them suitable for daily professional use. The set is supplied in a storage case with inclined trays for quick and easy bit selection. Technical specifications Material: Chrome Vanadium 6150 steel Hardness: 52-53 HRC Net Weight: 2.45 kg MPN: AK21956 Bit lengths: 30mm and 75mm Contents Security TRX-Star Bits: T20H, T25H, T30H, T40H, T45H, T50H, T55H, T60H (1 each 30mm and 75mm) Hex Bits: 4, 5, 6, 7, 8, 10, 12mm (1 each 30mm and 75mm) Ribe Bits: M5, M6, M7, M8, M10, M12, M14 (1 each 30mm and 75mm) Spline Bits: M5, M6, M8, M10, M12 (1 each 30mm and 75mm) Drive Adaptors: 3/8" Sq x 10mm Hex, 1/2" Sq x 10mm Hex Other information Lifetime guarantee*