3Pcs Screwdriver Extension Bits Quick Release 1 4 Hex Shank Holder Drill Bit Magnetic

3Pcs Screwdriver Extension Bits Quick Release 1 4 Hex Shank Holder Drill Bit Magnetic Interface has a locking mechanism, built-have magnetic, automatically pop up batch head. Extend all kinds of screwdriver bits, screwdriver head conversion uses. Fast fastening, greatly improve work efficiency. For use in hand-held drivers or power drills, this 1/4 inch female by 1/4 inch male magnetic bit holder. Helpful to remove or tighten a large number of screws after you've started or loosened them. Suitable for drill, screwdriver, batch head and other to transfer. Has a hardened and tempered steel shaft with a quick-release chuck. The 3pcs screwdriver extension bits are built-have magnetic, for use in hand-held drivers or power drills, to extend all kinds of screwdriver bits.Specifications:Material: Chrome Vanadium Steel             Color: Black             Hex Shank: 6.35mm( 1/4" )             Fir for: 1/4" shank dirver bitPackage Weight: 118g / 4.16ouncesPackage Size: 170 * 50 * 10mm / 6.69 * 1.97 * 0.39inPacking List:3 * Screwdriver Extension Bits