The Package: 3 x Female Torx socket with different drives: female torx socket with 1/4" drive: M4, M5, M6; 3/8" female torx key: M8, M9, M10, M12, M14 ; 1/2" female torx socket: M16, M18; 1 x storage box for female torx socket wrench. PREMIUM MATERIALSMade of high quality chrome vanadium steel with mirror polishing, provides the greater strength and torque. CHAMFERING DESIGNEach bit head has a unique chamfer design, which makes it easier to insert the bit head into the fastener and increase the surface area. contact with the fastener, reduce wear, protect the fastener. Applications: Work on cars, trucks, equipment, lawn mowers, machines and other jobs requiring star/bolt fasteners. EASY STORAGE: Each set includes a sturdy blow-molded case for convenient storage when not in use. They are embossed with corresponding sizes, so you can easily identify the socket. what you need.