Features: Avoid scratches: Polishing screws guard the mattress from scratches. The mattress is not impaired. Mattress slide stoppers: Designed for metal bed frames, these non-slip mattress clamps hold the mattress in place and prevent you from sliding around while you sleep. Adjustable design: Suitable for most standard size bed frames up to 2 inches in height and 1.5 inches in width. Easy installation: No drilling required, each non-slip mattress holder is equipped with 2 sets of nuts, simply place the nuts through the mounting holes on the bed frame and fasten the nuts. Sturdy material: These mattress holders are made of durable steel and are strong enough to hold their shape when stressed. The set includes 2 mattress slide plugs. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Package List: 2 Pcs*Mattress Adjustment Frames