Description Drillpro 3Pcs Power Screwdriver Extension Bar Adapter 1 4 Inch Hexagon Shank Power Screwdriver Driver Socket BitSpecification Product NameScrewdriver Extension Bar AdapterModel Number686420MaterialChrome vanadium steelShank1 4 inch hexagon shank Size Square Head SizeLength1 4 inch653 8 inch661 2 inch68Features 1 Spring loaded ball bearing on head holds sockets securely 2 Suitable for quick change 1 4 inch chuck systems or directly into drill chuck 3 Change your hand socket set into a driven socket set 4 This set is perfect for your impact driver or drill 5 The 1 4 inch hexagon shank fits all quick change chucks as well as standard drill chucks 6 1 4 inch shank can be converted to 1 4 inch 3 8 inch 1 2 inch square head Package Included 3xScrewdriver Extension Bar AdapterMore Details