General description Sealey Premier Spline Socket Bit Set includes 8 pieces with 1/4", 3/8", and 1/2" square drive sockets made from forged Chrome Vanadium steel. The set features S2 steel spline bits and is designed for daily professional use. It comes supplied on a socket rail for easy organization and storage. Technical specifications Model No.: AK6214 Nett Weight: 0.47 kg Socket Sizes: 1/4" Sq Drive: 4, 5, 6 mm; 3/8" Sq Drive: 8, 10, 12 mm; 1/2" Sq Drive: 14, 16 mm Other information