Specification: *Such as objects against the wall like beds, cabinets, chairs and sofas. *Occasions: Easy to install. Suitable for bedroom, hotel etc. Prevent bed movements from squeaking and improve your sleep. Material: Iron,Plastic Color: Bronze, Silver S: Adjustable 28mm-38mm M: Adjustable 38mm-46mm L: Adjustable 46mm-56mm Package Contents: 1pc x Bed Frame Tool 1pc x Felt 1pc x Tape Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. *Anti-Shake Function: Used for fixing the bed frame, anti-shock adjustable threaded tool which will keep you safe. *Material: Made of Iron, durable and sturdy. *Wall Protect: Self- design is easy to stick and will not damage the wall surface. *With felt, can effectively reduce noise and protect the wall from damage and prevent bedrock from shaking. *Application Items: The center of gravity is unstable or easy to shake objects can be used.