VIM Tools 5/16 Inch Magnetic Bit Extension, 1/4 Inch Power Drive Shank

Made of S2 steel for the strongest and hardest drivers available Natural finish Heat treated to 58-62 RC Licensed Torx product Strong, permanent magnet holds bits securely in place5/16 x 5/16 Magnetic Bit Extension, 2.75 OAL. Strong neodymium magnet holds bit in place.