The Autojack 94 piece general-purpose heavy-duty socket and bit set include various sized drive sockets and bits for an array of applications, manufactured from high-quality chrome vanadium steel with a professional satin finish for strength and longer working life. The reversible 1/2" and 1/4" drive ratchets are ideal to tighten and untighten bolts in hard-to-reach areas. The quick-release push-button allows quick change of sockets with the switch lever at the back of the head allows you to change direction quickly and efficiently, the ergonomic soft-grip handles ensure smooth action whilst in use.