This Offset Ratchet Bit & Socket Set is manufactured from carbon steel for increased durability & the bits are manufactured from chrome vanadium steel for increased strength. The set is ideal for small repairs around the home or workplace. The set features a reversible ratchet, 1/4" drive sockets (5-13mm), assorted screwdriver bits, a socket adaptor & a bit holder. The set comes packed in a useful storage case.