The 7Penn Bed Riser Set will safely raise your furniture to the height you desire. They are completely customizable and adjustable to fit any bed, chair, couch, or coffee table. Create more room for under bed storage, make it easier for elderly to get in and out of a chair, and keep your sheets from hitting the floor so bed bugs can’t crawl directly from the carpet to your sheets. Most wooden or metal legs and caster wheels fit securely into the 3” x 3” x 3/4" deep (7.6cm x 7.6cm x 2cm) built-in recess cups. To suit your needs, choose a package of 8 black or white risers – (4) 3” (7.6cm) risers + (4) 5” (12.7cm) risers, a package of 4 black or white 3” (7.6cm) risers, or a package of 4 black or white 5” (12.7cm) risers.