Manufactured from hardened and tempered Chrome Vanadium steel with 1/4in. square drive hexagon shanks, this three piece power tool adaptor set is ideal for use with all electric/air drills. Ideally suited for repetitive applications which require 1/4in., 3/8in. or 1/2in. square drive sockets. Features spring-ball socket retention. Features and Benefits Suited for daily and repetitive everyday use due to its robust construction Manufactured from hardened and tempered chrome vanadium steel for optimum durability Ideal for use with all electric/air drills for versatility Features spring-ball socket retainers for a positive and firm lock action Lifetime manufacturers guarantee (T's&C's Apply) Typical Applications Construction Automotive Workshops