Wera 136421, 9601 Magnetic socket rail, 3/8″, empty, 30 x 340 mm por | ago 7, 20261 socket rail, empty. For up to 10 sockets and/or bit sockets with 3/8″ drive. The rail allows temporary attachment to metallic surfaces and, with its twist-to-unlock function, ensures secure locking and unlocking of the sockets.