Professional auto repair tools are for commercial and occasional use. It is suitable for handymen, repairers, construction workers, mechanics, workshops, body shops, etc. They have been manufactured from chrome vanadium steel for strength and durability. Features: The socket is cold-formed with chrome vanadium steel, and the torque is made of carbon steel. Higher hardness and higher toughness. Small, lightweight and portable. Blow molded boxes for easy storage and transportation. Suitable for car and bicycle repair, it is an excellent choice for amateurs and professionals. Compact and powerful tool. Male and Female Torx / Star / E Type Sockets. 3/8" drive so will fit any 3/8" drive ratchets/power bars etc. Specifications: Material: chrome vanadium steel Net weight: about 1kg Size: 22 * 12 * 6cm Quantity: 34 pieces Use range: auto repair, other The package includes: 12pc E sockets: E4,5,6,7,8,10,11,12,14,16,18,20 11pc Bits sockets: T10,15,20,25,27,30,40,45,50,55,60 10pc Torx bits: TT10,,15,20,25,27,30,40,45,50,55 1pc Bits holder 8mm