General description Sealey Premier TRX-Star* Socket & Security Socket Bit Set includes 38 pieces designed for 1/4", 3/8", and 1/2" square drives. The set features drop-forged Chrome Vanadium steel sockets paired with S2 steel TRX-Star* bits, ensuring durability and reliability for professional use. The sockets are heat treated and chrome plated to resist corrosion, and they come with a fully polished mirror finish that includes a knurled ring for better grip, even with oily fingers. The set is supplied in a convenient storage case. Technical specifications Model No.: AK6197 EAN: 5051747354494 Nett Weight: 1.66 kg Drive Sizes: 1/4", 3/8", and 1/2" Sq Contents: TRX-Star* Socket Bits - 1/4"Sq Drive: T8, T10, T15, T20, T25, T27, T30; 3/8"Sq Drive: T40, T45, T47, T50, T55; 1/2"Sq Drive: T60; Security TRX-Star* Socket Bits - 1/4"Sq Drive: T7H, T8H, T9H, T10H, T15H, T20H, T25H, T30H; 3/8"Sq Drive: T40H, T45H, T50H, T55H; TRX-Star* Sockets - 1/4"Sq Drive: E4, E5, E6, E7, E8; 3/8"Sq Drive: