Features: With a storage box, accessories can be neatly stored in the box, which is easy to carry and not easy to lose. 40-piece set combination: 13pcs 1/4 inch sockets, 13pcs metric sockets, 3pcs octagonal sockets, 6pcs 3/8 sockets, 1 ratchet wrench, 1pcs 3/8 to 1/4 converter, 1pcs connect rod, 1pcs blue film and a carry box. Wide ranges of application: suitable for car repairs, motorcycle repairs and bicycle repairs, suitable for daily maintenance at home and use in auto repairs shops. The sleeve is made of chrome vanadium steel, and the torque wrench is made of carbon steel, which not easy to damage and has a long service time. The portable box design can be placed in the car for storage and carrying, and it is also suitable for repairing the car when going out.