Discover the ultimate 74-piece TRX-Star Security, Hex, Spline, and Ribe Socket Bit Set, designed for both professional tradesmen and DIY enthusiasts. This comprehensive set features durable Chrome Vanadium 6150 steel bits, available in 30mm and 75mm lengths, ensuring you have the right tool for every job. Each bit is hardened and tempered for superior strength and longevity. This versatile socket bit set includes 3/8" and 1/2" square drive adaptors, along with a wide range of TRX-Star, security TRX-Star, hex, spline, and ribe bits, making it perfect for tackling various tasks. The set comprises: - TRX-Star Bits: T20, T25, T30, T40, T45, T50, T55, T60 (1 each in 30mm & 75mm) - Security TRX-Star Bits: T20H, T25H, T30H, T40H, T45H, T50H, T55H, T60H (1 each in 30mm & 75mm) - Hex Bits: 4, 5, 6, 7, 8, 10, 12mm (1 each in 30mm & 75mm) - Ribe Bits: M5, M6, M7, M8, M9, M10, M12, M14 (1 each in 30mm & 75mm) - Spline Bits: M5, M6, M8, M10, M12 (1 each in 30mm & 75mm) - Drive Adaptors: 3/8" Sq x 10mm Hex, 1/2" Sq x 10mm Hex. All bits are conveniently organized in a high-impact storage case featuring inclined trays for quick and easy selection, making your work more efficient. Enjoy peace of mind with a lifetime guarantee on this essential tool set. Whether you're a seasoned professional or just getting started, this bit set is a must-have addition to your toolkit. Shop now and elevate your DIY or professional projects with reliability and ease.