Features: 1、It can effectively prevent shaking， calm mood and improve the quality of your sleep. 2、EVA cushion can effectively reduce noise and protect the wall from damage and prevent bedrock from shaking. 3、Easy to install， our threaded slides are screwed into place and can change your bed frame in minutes to make your bed more stable. 4、Great for gravity center unstable or easy to shake the object， such as bed， cabinet， chair， sofa， refrigerator， washing machine and other objects used against the wall. 5、Our products are available in 4 different height ranges， you can match the size you need according to the actual situation. 6、It is made of high quality metal material ， which is firm and reliable and can withstand heavy pressure. Specification: Condition: 100% Brand NewItem Type: Threaded Bed FrameStyle: Without Screw， 1PCS Screw， 2PCS Screw， 3PCS Screw(Optional)Material: Metal+EVAColor: As shown in the pictureSize: Approx.4x3.6cm / 1.6x1.4in(Upper Diameter x Bottom Diameter) Without Screw Height: Approx.3-4cm / 1.2-1.6in 1PCS Screw Height: Approx.5.5-7cm / 2.2-2.8in 2PCS Screw Height: Approx.7.5-10cm / 3.0-3.9in 3PCS Screw Height: Approx.9-13cm / 3.5-5.1in Weight: Approx.45g~100g/1.6oz~3.5ozInstructions:Measure the distance between the swayed furniture and the wall， then select the appropriate size of the adjustable threaded bed frame anti-shake tool to secure it in place..w-e-text table td，.w-e-text table th， Package List: 3 x Screw1 x Base1 x Gasket Note: 1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same， item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.