Features: This shaft is made of high quality carbon steel and plastic which make it practical and durable. Strong magnet holds bits securely, and the magnet is located inside the chrome tube. Suitable for pneumatic screw drivers, electric drills, electric screwdrivers, screwdrivers. Package Include 10pcs magnetic extension extend drill bit holder 1/4" hex. Specifications: Length: 60mm Hex Size: 1/4" Package Included: 10 x Magnetic Screwdriver Bit Holder On 16-Oct-2023 at 09:37:26 BST, seller added the following information: