Specification: Material: Stainless steel + EVA Length: 67 - 87mm Weight: Approx. 79g Base diameter: 37mm EVA head diameter: 44mm Package included: 4 x Anti-shake tool Practical design: This adjustable telescopic anti-shake tool can effectively reduce the noise caused by the unstable structure of the bed thanks to its simple but practical design. An EVA pad + metal base + adjustable rod. High quality material: high quality metal base with self-adhesive EVA pad. Wide application: headboard stopper, sofa stabilizer or closet anti-shake tool; also useful for chairs and other furniture against the wall. Perfect for room, school, hotel, restaurant, garden, etc. To stabilize the furniture and less noise and protect the wall from damage. Easy to install: 1. Metal base with self-adhesive attach to furniture; 2. EVA pad touches the wall; 3. Use the screw to adjust the width between the furniture and the wall.