Adjustable Length: Adjustable headboards for bed can effectively avoid the collision between the bed and the wall, while protecting the wall from damaging. EVA Cushion: Using EVA cushion, you can easily fix the headboard brackets for metal bed frame to the wall or furniture, and then easily screw the adjust nut for installation. Keep Quiet: When children are playing on the adjustable bed and the bed will make a big noise, bed stoppers can effectively help you solve this problem. Applicable Scenarios: The bedside anti-collision tool can be used behind the desk, cabinet, bedside and door. Durable: Metal material, firm and durable, anti-rust and wear-resisting. Specification: Material: stainless steel+plastic Color: as shown Size(approx): S: 45-55mm/1.77-2.17inch(length) M: 62-82mm/2.44-3.23inch(length) L: 82-102mm/3.23*4.02inch(length) XL: 102-122mm/4.02-4.8inch(length) Top dia(approx): 38mm/1.5inch Bottom dia(approx): 37mm/1.46inch Package: 4 pcs * Bed frame anti-shake tool 4 pcs * Double-sided tape 4 pcs * Gasket