GearWrench Magnetic Socket Rail, 3/8 in Drive, 18.3 in OAL, Aluminum.The GearWrench 83127 Magnetic Socket Rail provides a complete and compact storage solution for 16-3/8 in drive sockets. The rotating clips let you load and unload sockets easily, while the ball bearing retention system holds sockets securely in place. This organizer has a sturdy aluminum frame to keep the rails straight and attaches to any steel surface via the solid magnetic plates on the back. Every socket clip rotates a full 360 so you can easily identify your sockets. Perfect for automotive or industrial mechanics.