Instructions for use The red side of the base with double-sided tape is glued to the head of the bed, and then the black side of the EVA pad is twisted by hand until it is against the wall. Easy to install Adjust the length as your need,easy to change the stability of your bed frame in just a few minutes by simply screwing headboard stopper into place. Wall Protection EVA cushion effectively reduces noise and protects your wall from damage, this headboard stabilizer can prevent the head of the bed from becoming wobbly. Variouse UseThis 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 the object can be used. Such as bed, cabinet, chair, sofa and other objects used against the wall. Warm TipsMeasure the distance between your shaking furniture and the wall, then choose the right size , our headboard anti shake too can be adjusted from 30mm to 40mm.