Anti-Shake Tool Set: The set includes 4 pcs adjustable anti-shake tool (2 Size M and 2 Size L). Each set of size M includes: 1 X bed wall stopper, 1 X round stickers, 1 X EVA cushion, 1 X adjustable screw(1.97-2.76 inch/50-70mm). Each L size set includes: 1 X bed wall stopper, 1 X round stickers, 1 X EVA cushion, 3 X adjustable screw(1.97-3.94 inch/50-100mm). Please make sure the size is right before ordering. Protection & Fixation: Our telescopic support headboard stabilizer is designed with EVA cushion to prevent the headboard from shaking, effectively reducing noise and protecting your walls from damage. Improve Sleep Quality: Without proper support, your bed will creak when you sleep. The bed frame anti-shake tool keeps the headboard stable, so you can fall asleep without worrying about creaking after use. Easy to Install: This headboard stoppers are easy to install without drilling into the wall or headboard. Just peel off the white sticker and stick it where you want, then adjust the length with screws to make it firm. Wide Application: The prevent loosening anti-shake fixer can be used in many places, as long as the center of gravity is unstable or easy to shake objects, such as beds, cabinets, sofas, chairs and other objects that are used against the wall.