1. Using our adjustable threaded bed frame anti-shake, you can keep your bed, cabinet or sofa stable, away from shaking and noise. 2. Headboard wall protectors are suitable for the fixation of 1.10-4.50in(30-114mm) . The Bed frame anti shake tool is made of iron, strong and reliable, can withstand heavy pressure. 3. The bed stabilizer against wall can not only prevent the bed from shaking but also refrains friction between the bed frame and the wall. With a EVA cushion and tape, no harm can ben done to the wall. 4. Bed stoppers for headboard can not only be used as a bed frame anti-shake tool but also used for any furniture that is easy to shake, such sofas, book shelves, table, cabinets and other item which against the wall. 5. adjustable bed frame anti-shake tools (screws) are packed in separate including double-sided tape and EVA cushion. be enough to keep your bed away from noising and shaking. size: Adjustable 84-110mm Material: Metal colour: black Package Contents: 4 x Adjustable Bed Frame Anti-Shake Tools 4 x Double-Sided Tape 4 x Eva Cushion 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.