SAE (Inch) Sizes – Not Metric: This 13-piece Allen wrench set includes imperial (inch) sizes only, suitable for bolts and screws with SAE hex sockets. COLOR-CODED IDENTIFICATION: Each Allen key is color-coded for quick and easy size recognition, saving time and improving workflow during mechanical or assembly tasks. HIGH DURABILITY MATERIAL: Manufactured from premium heat-treated steel, this hex key set delivers exceptional strength, long-lasting performance, and precise torque application. ERGONOMIC L-SHAPE DESIGN: Ball-end design allows angled entry up to 25° for better access in tight spaces, ensuring efficient handling and precision during work. MULTI-USE TOOL KIT: Ideal for bike maintenance, furniture assembly, automotive repairs, and general DIY tasks. Organized holder keeps all hex wrenches secure and portable. 13 Piece SAE Allen Wrench Set Ball End Hex Keys Color Coded L Shape Design Alloy Steel Tool Kit for Bike Furniture Repair DIY Projects