Check the listing for details. 1/4" Quick-Change Hex Shank 13mm Magnetic Nut Driver Bit 1.89" Long. Condition: New. Listed at 9.01 USD. 1. Constructed from forged and quenched chrome vanadium steel with a corrosion-resistant sandblasted finish, high hardness and durable to use.2. Universal 1/4'' hex shank is suitable for quick-change/release and secure locking of chucks, drill bits, driver and screw-gun.3. The magnetic pad inside the socket holder, can firmly grasp the hexagonal nut and fastener for easy installation or loosening/removal.4. Suitable for installation in those hexagonal tools, such as pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, manual screwdriver, etc.5. Can be used for home DIY, woodworking, professional machinery, and professional contractor maintenance.Specification:Socket Size: 13mmHex Shank Size: 1/4-inchTotal Length: 48mm / 1.