Contents: 3 sockets with different drives: 1/4 inch: M4, M5, M6; 3/8 inch: M8, M9, M10, M12, M14; 1/2 inch: M16, M18; 1 socket wrench storage box. High-quality material: Made of high-quality mirror-polished chrome vanadium steel, it provides optimal strength and torque. Chamfered design: Each bit features a unique chamfer, making it easier to insert the fastener. It also increases the contact surface with the fastener, reduces wear, and protects the fastener. Application: Suitable for cars, trucks, equipment, lawn mowers, machinery, and other projects requiring star/bolt fasteners. Easy to store: Each bit set comes in a sturdy blow-molded box for easy storage. They are printed with the corresponding size so you can easily identify the socket you need. Need.