General description Sealey Premier TRX-Star Socket Bit Set includes 12 pieces designed for 1/4", 3/8", and 1/2" square drives. Made from drop-forged Chrome Vanadium steel, these sockets and TRX-Star bits are built for durability and professional use. The set features a knurled ring on the sockets for better grip, even with oily fingers, and a satin finish that provides additional corrosion resistance. The bits are supplied on a convenient socket rail for easy organization. Technical specifications Material: Drop-forged Chrome Vanadium steel Contents: TRX-Star bits for: 1/4" Drive - T10, T15, T20, T25, T27, T30 3/8" Drive - T40, T45, T47, T50, T55 1/2" Drive - T60 Model No.: AK6213 Lifetime guarantee* Other information Supplied on socket rail Part of a comprehensive range of Premier Hand Tools, suitable for daily professional use