Featuring a 3/8-inch drive, this PRO six-point socket from Fuller® Tool is engineered to last for years. Available in various metric sizes and made from chrome-vanadium (CrV) steel for strength and durability, the six-point design always ensures a snug fit. Heat treated for consistent hardness and chrome plated to resist rust and grime, Fuller® sockets will always work as hard as you do no matter how tough the job.