TORX socket set 1/2", 3/8" and 1/4" The set is carefully and precisely manufactured from high-strength chrome-vanadium steel (CrV), which significantly increases their durability and service life. The kit will be useful in any professional car workshop, as well as in the home garage. Everything is packed in a convenient and strong plastic case. Chrome vanadium steel (CrV steel) is a special type of steel mainly used in Europe. Used to make tools such as wrenches and drills. In the case of this type of steel, its hardness is increased by the use of chromium and vanadium as alloying additions. Chromium guarantees the resistance of steel to corrosion, oxidation, friction and high durability at high temperatures. Complete set: 4 x 1/2 inch wrenches E-TORX E18, E20, E22, E24 5 x 3/8 inch wrenches E-TORX E10, E11, E12, E14, E16 5 x 1/4 inch wrenches E-TORX E4, E5, E6, E7, E8