40-Piece Star Spline Hex Socket Set for 1/2in & 3/8in Drives ✔️ Includes 40 pieces for 1/2in and 3/8in drives in a handy toolbox This 40-piece star spline hex socket bit set is designed for 1/2in and 3/8in drive wrenches, ideal for auto repairs and home maintenance. ✅ Compatible with 1/2in and 3/8in drive wrenches and impact tools ✅ High-grade steel construction for durability and wear resistance ✅ Precise bit ends with chamfer to ease fastener entry and reduce wear ✅ Wide variety of sizes with easy-to-read markings for quick identification ✅ Includes 40 bits and a toolbox for safe storage 💡 What is a star spline hex socket set used for? A handy tool for driving and removing star spline fasteners in automotive and home projects. - Handy for automotive maintenance and DIY tasks - Works with 1/2in and 3/8in drive wrenches - Wide range of sizes with clear markings for quick selection - Durable steel construction for long life