Bestgle 3 Packs 1/4 Inch Hex Shank Magnetic Extension Chuck Adapter Quick Release Bar Socket Screwdriver Bit Holder, 60mm

NOTE: Only the bottom of the hole part has magnetic. And Only suitable for single hex shank drill bit. Made of Chrome Vanadium steel (CR-V), heat treated high hardness, wear resistance, durable and long service life. 1/4" hex shank, quick change and fit all power drills, 1/4" impact drivers and hand-held drivers. Built in strong permanent magnet(the hole part), hold bits securely, great for working with hard to reach screws. Great for extending all kinds of drill, batch head, screwdriver bits, screwdriver head conversion use., Manufacturer: Bestgle