Mattress Holder in Place:The mattress retainer bar keep mattress from sliding, it is designed with an L-Bend shape can be firmly fixed to the bed frame to prevent your mattress from sliding. Say goodbye to annoying mattress sliding and enjoy a peaceful night's sleep with the bed slide stopper Adjustable Design:The width of the anti-slip baffle can be adjusted,wide adaptation range. Adjustable Max-width is 1.6 inch ,which fits most bed frames. Can be used for your home, vacation home, RV and other bed frame of various sizes. If the wooden frame, you can buy self-tapping screws to tighten Robust and Stronger: The non slip mattress gaskets are made of thickened and Material,with black painting,resistant to rust. The thickness of 0.12 inch will not deform,and it is so robust to withstand very strong pressure from mattress or box spring Avoid Scratching Mattress and Box Spring: Add a piece of metal strip to lock firmly on the bed frame,while protecting your bed frame from being scratched. Recessed round head screws won't scratch your mattress or box spring as easily as wing screws Easy to Install: Installation only takes a few minutes and provides all installation tools. Align the mattress fixing rod with the bed frame, and then tighten the screws Colour:black Material:iron Package Contents: 2 * mattress slide stopper 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.