Description 3pcs 1 4 Inch Hex Magnetic 80 120mm Screwdriver Bit Holder and 60mm Socket Extension BarSpecification TypeSocket Extension BarScrewdriver Bit Holder Materialzinc alloy Chrome vanadium steelLength 80mm 120mm60mmShank 1 4 hex shank 6 35mm 1 4 hex shank 6 35mm Quantity2pcs1pc Features Socket Extension BarScrewdriver Bit Holder The black cover can be Extented Black cover Anti slip soft design Socket Extension Bar black cover and axis separate This guide rod is only suitable for Mounting guiding screw of batch head Interface has a locking mechanism built have magnetic automatically pop up batch head Suitable for drill screwdriver batch headand other totransfer Extend all kinds of screwdriver bits screwdriver head conversion uses Fast fastening Greatly improve work efficiency Package Included 1pc x 80mm Socket Extension Bar1pc x 120mm Socket Extension Bar1pc x 60mm Quick Release Bit Holder More Details