13 Pcs Socket Wrench Set, Bit Socket Set, Female Torx Sockets, Torx Bit Socket Set, Chrome Vanadium Steel 1/4", 3/8" and 1/2" Drive Durable MaterialThe drill sockets feature high quality durable S2 alloy steel drill bits and chrome vanadium steel sockets. These Torx drill bit sockets are rare and extremely hard, durable and wear resistant. T8, T10, T15, T20, T25, T27, T30; 3/8" drives: T40, T45, T50, T55, T60; 1/2" screwdriver: T70. The bit itself comes with its own model number.Durability and LongevityEach bit is precision manufactured using CNC machines, including chamfered edges to ensure a smooth fit and protection for your bits. drill bits and your fasteners. Strong and durable chrome-vanadium steel sleeves provide excellent and perfect torque for greater turning power, chrome-plated finish for maximum corrosion resistance.Portable and StorageAll parts in this set store together safely in a durable blow-molded carrying case for easy organization and convenient portability.Wide ApplicationThe product set has a wide range of versatility and functions: both professionals and amateurs can use it. The product is suitable for: electrical equipment, vehicles, gardening equipment and other star bolts and fasteners.