This is a simple and efficient prevention of mattress movement stopper, we specifically designed and produced for the bed frame factory The quantity is two, equipped with screws, just need a screwdriver to tighten on the bed frame. Made of flat and thick metal, not easy to deformation, the surface treatment, strong and durable Can be used for your home, vacation home, RV and other bed frame of various sizes, to determine the size before purchase, and whether it is suitable for screw installation can be. Colour:As Shown Material:Metal Size:26 x 9 x 8cm Package Contents: 2 x Mattress Retainer 8 x screw 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.