2 Pieces: Within the package there are 2 pieces anti-shake tools that can be used for both sides of your bed. Adjustable: The stopper is designed to be 3cm stretchable so that you can adjust it according to the distance between your wall and bed. Heavy Duty: The bed fixer features strong bearing capacity and it can stand at most 600kg, which is reliable. 2 Size: The tool is designed with 2 different size that you can choose according to your actual need. Useful Tool: By using the fixer, it can effectively help you to reduce the noise when you move during sleep. Specification: Material: ABS. Color: Yellow, Brown. Large Size: Approx. 10x6.5x6.5cm/3.94x2.56x2.56inch. Small Size: Approx. 5x6.5x6.5cm/1.97x2.56x2.56inch. Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 2 Pieces Headboard Anti-shake Tools.