Mesee 3 Pieces Magnetic Extension Chuck Adapter with 1/4 Inch Hex Shank Quick Release Bar Socket Screwdriver Bit Holder Kit for Screws Nuts, 60mm Length

Length: 60mm(2 inch); Hex Shank Diameter: 6.35mm(1/4 inch) Interface come with locking mechanism and built-in magnetic, easy to lock the screwdriver bits more tightly Fast quick release system, automatically pop up batch head, help you quickly install and change screwdriver bits, improve work efficiency Used for screwdriver bits, drill, batch head and other tools for the conversion, hex shank can fit power drills chuck, 1/4" impact drivers and hand-held drivers. Please Note: Only the bottom of the hole part has magnetic! Only suitable for single hex shank drill bit, NOT suitable for double head screwdriver bits!