Designed for insert 1-inch bits only Made with chrome molybdenum steel for durability that can be used with power impact wrenches, drivers and drills The internal magnet holds the bit while the outer circular ring magnet powerfully holds the screw in place Retractable magnetic sleeve eliminates wobbling for accurate fastening while driving screws Includes three kinds of drive adapters are 1/4-inch hex shank, 3/8-inch square drive and 1/2-inch square drive KAIFNT K354 Magnetic Screwdriver Bit & Screw Holder Socket Adapters, 3-Piece Twofold magnetic bit holder adapter, two powerful magnets design makes one magnet holds and magnetizes the bit while the second magnet powerfully holds the screw in place. Socket forged with chrome molybdenum steel for maximum strength. The adapter works with all 1 inches hex insert bits and can be driven on power impact wrenches, drivers and drills. Set Includes:
• 1/4-inch hex shank to 1/4-inch hex bit adapter, twofold-magnetic
• 3/8-inch square drive to 1/4-inch hex bit adapter, twofold-magnetic
• 1/2-inch square drive to 1/4-inch hex bit adapter, twofold-magnetic
• Tray organizer