[Mattress sliding stopper] is specially designed for metal bedsteads. These anti-slip mattress clips hold the mattress in place and prevent you from sliding around when you sleep. [Adjustable design] Suitable for most standard bedsteads with a height of less than 2 inches and a width of less than 1.5 inches. [Avoid scratches] Polished screws can protect the mattress from scratches. The mattress is not damaged. [Convenient installation] There is no need to drill holes. Each non-slip mattress clip is equipped with 2 sets of nuts. Just put the nuts through the installation holes and fasten them on the bedstead. [Solid materials] These mattress supports are made of durable steel, which is strong enough to keep their shape under stress. The set contains 2 mattress sliding plugs. Colour:black Material:Metal Package Contents: 2 x Mattress sliding 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.