Features: brand new and high quality EVA shock-absorbing gasket: sound-absorbing and shock-absorbing, effectively protecting the wall. Adjust the length according to your needs, just screw the headboard plug into place, and you can easily change the stability of the bed frame within a few minutes. Effectively reduce noise and protect your walls from damage, this headboard stabilizer can prevent the headboard from shaking. This adjustable threaded bed frame anti-shake tool can be used in many places, as long as the center of gravity is unstable or easy to shake objects can be used. Such as beds, cabinets, chairs, sofas and other objects used against the wall. Measure the distance between the swinging furniture and the wall, and then select an adjustable threaded bed frame anti-sway tool of the appropriate size to fix it in place. Specifications: Material: Metal Color: Black Large Length: Approx. 67-87mm/2.64-3.42inch Medium Length: Approx.47-67mm/1.85-2.64inch Trumpet Length: Approx.30-40mm/1.3-1.57inch for Extra Large Length: Approx.84-110mm/3.31-4.33inch Bottom Diameter: Approx.3.8cm/1.50inch Package Includes: 1x Adjustable Threaded Bed Frame note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.