[Mattress Slide Stoppers]Specially designed for metal , these anti-slip mattress clips secure your mattress in place, preventing it from sliding around while you sleep. [Adjustable Design]Suitable for most standard size within 2 inches in height and 1.5 inches in width. [Avoid Scratches]Polished screws are to protect the mattress from scratches. The mattress is not . [Easy Installation]No drilling required, each anti-slip mattress clamp comes with 2 sets of nuts. Just pass the nuts through the mounting holes and place them on the bed frame and tighten the nuts. [Sturdy Material]These mattress supports are made of steel, strong enough to maintain their shape when subjected to stress. This set contains 2 mattress slide stoppers. Color: Black Material: Metal Package Contents: 2set 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.