Usage Tips:Prevent Mattress Sliding: Designed for optimal stability, this set includes six pieces tailored to keep your mattress firmly in place. The non-slip gaskets effectively prevent mattress movements during sleep, ensuring uninterrupted, secure rest. Ultra-Thick Durability: Crafted from extra-thick, metal using advanced polishing techniques, these mattress holders offer superior grip in holding your bed frame. Easy Installation Process: Featuring an adjustable screw, these retainers can be tailored to fit a variety of bed types, including metal frames, wood, and box springs. The wide, arc-shaped edges provide added protection against scratches or damage to both frame and mattress. Essential Bedding Accessory: Experience peaceful sleep without the hassle of frequent mattress adjustments. Our premium bed brackets are designed to snugly secure mattresses to frames, ensuring that your sleep remains intact throughout the night. The actual product may have slight color difference or difference, which not affect the use Colour:Black Material:Metal Package Contents: 6 x Mattress Holder 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.