EXTENSION LOCKING SET SCREW ATTACHMENT

Extension, Locking, Set Screw Attachment, 3/8" Sq. Drive, 2 1/8", Dimension A, Shank Dia. , Inches: 3/4, Dimension B, Length, Inches: 2 1/8, Finish: Chrome, Square Drive, Inches: 3/8, Ideal For Use When Stacking Tools Or When Safety Could Be Compromised By A Falling Tool. Quick Release Lock At Male End. Set Screw Locking At Female End. Knurled Sleeve Pulls Back For Secure And Easy Installation And Removal Of Sockets. Allows Easy And Secure Stacking Of Tools. Securely Connects Breaker Bar, Extensions And Ratchets To Socket And Socket Drivers To Eliminate Socket Coming Loose When Working Overhead. Simply Slide Back Sleeve To Remove Socket. Do Not Use With Power Or Impact Tools.