Add shelving, lashing points or shoring to any E-Track cargo area. - Create removable load lock bars, vertical level dividers for decking cargo, custom cabinets and shelves. It allows you to build shelving, beds, dividers, and cargo restraints very quickly and easily. Easily adjustable for different mounting points. - Just screw 2x4\/2x6 Wooden into these heavy duty wood beam end sockets. It's got the spring-loaded clip right here, that way you can always adjust the height up and down on your E Track system. You can move this to any mounting location on your E Track system. Thick steel plated with zinc. - Gold zinc-coated steel for superior and rust resistance in addition to a life-time of sturdiness. Experiment testing breaking strength: 940lbs. Height 3.4Inch x Length 4.4Inch x Inside Width 1.7Inch, 2 bolting holes diameter 1\/4Inch. - These socket tie downs are generally suitable for use with standard 2x4s (with a true measurement of 1-3\/8Inch x 3-3\/8Inch). The 4 bolting holes have diameters of 1\/4Inch. Colour:As Shown Material:steel Package Contents: 10 * E-Track Wood Beam End Socket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.