General description Manufactured from heat treated, drop-forged high grade carbon steel with chrome plating for corrosion resistance, the Sealey Metric Imperial Socket Set is designed for maximum torque transfer with its WallDrive® sockets that grip the flats of the fixing. This 26-piece set is supplied in a heavy-duty impact resistant storage case and is part of a comprehensive range of Premier Hand Tools, suitable for daily professional use. It also comes with a lifetime guarantee.