The URREA 1/4 in drive short sockets, are made of chrome vanadium steel with nickel - chrome plated. The mouth of the sockets has a Super Drive® design that prolongs their life and does not damage the screws and nuts and bolts. This set features 9 sockets sizes: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm. Meets National and International standards: exceed ASME B107.110 2012 and DIN 3124 standards. Used for automotive and industrial maintenance and repair work. There is an Urrea socket always available and ready for any challenge.