The Ko-ken RS3425/4-2B 3/8" Square Drive Nut Grip® TORX® Socket Set is a 4-piece collection designed for innovative fastening solutions. This set includes TORX® sockets in sizes E10, E12, E14, and E20, all securely mounted on a 150mm rail for convenient organization and access. Unique to Ko-ken, the Nut Grip® design features a coil spring and ball bearings that hold nuts and bolts in place without the use of magnets, ensuring a secure grip during use. This effective system allows for efficient torque transfer, reduces load, and virtually eliminates tool slippage. Engineered for durability and performance, this TORX® socket set is an essential addition for professionals seeking reliable and efficient fastening solutions.