Forged Chrome Vanadium steel sockets with S2 steel bits. Heat treated and chrome plated with a fully polished micro satin finish. Colour-coded rings for fast identification. Supplied on anodised aluminium socket rail with lockable nylon clips. SEALEY PREMIER - One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. DURABLE - Sockets are manufactured from Chrome Vanadium steel with S2 steel bits. 18PC SOCKET BIT SET - Including hex socket bits 4-12mm and TRX-Star* socket bits T10-T50. COLOUR CODED RINGS - For quick and easy identification. SUPPLIED WITH ANODISED ALUMINIUM SOCKET RAIL - For easy storage solutions. SECURE FIT - Socket rail features lockable nylon clips. LIFETIME GUARANTEE*.