Draper Tx-Star® Security Socket Bit Set, 1/2" Square Drive, 100mmExpert Quality, 7 Draper TX STAR security socket bits, 100mm long. All socket manufactured from hardened and tempered chrome vanadium steel with sand blasted bits of S2 silicon steel. Each socket has a knurled ring for extra grip. Supplied on a steel socket retaining rail. Key Features Expert Quality: The Draper Tx Star Security Socket Bit Set features 7 high performance bits, ensuring durability and reliability for professional and DIY applications.