Fangrui Product Details Improve The Quality Of Your Sleepheadboard Stoppers For Wall Can Reduce The Noise Caused By The Unstable Structure Of The Bed Or Other Furniture, Give You A Quiet And Comfortable Home Environment, And Enjoy Your Lifeheight Adjustablethe Length Of Each Bed Head Holder Can Be Adjusted Freely And The Number Of Adjusting Screws Can Be Reduced Or Increased By 33-44mm (0 Screw), 47-64mm (1 Screw), 64-87mm (2 Screw), 84-110mm (3 Screw).easy Installationthe Side Of The Base With Double-sided Tape Is Glued To The Head Of The Bed, And Then The Side Of The Eva Pad Is Twisted By Hand Until It Is Against The Wall. No Complicated Operation, Easy To Fix Furniture.wide Range Of Usesthis 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.packaging Includes4 Pieces Headboard Bumper And 8 Screws. Superglue And Eva Protective Pads Have Been Installed On The Bed Frame Anti-shake Tool In Advance, Making Your Use Easier And More Convenient