Description 3pcs 1 4 Inch Hex Magnetic 80 120 140mm Screwdriver Bit Holder Socket Extension BarSpecification Materialzinc alloyLength 80 120 140mmShank1 4 hex shank 6 35mm Quantity3pcsFeatures 80mm can be extended to 120m 120mm can be extended to 200mm 140mm can be extend to 240mm The black cover can be extented Black cover anti slip soft design Socket extension bar black cover and shaft separate This guide rod is only suitable for mounting guiding screw of batch head Package Included 3 x Socket Extension BarMore Details