Fix anything that wobbles! Stabilize tables, shelves and other furniture – level cabinets, fixtures and appliances. Durable, opaque polypropylene plastic for use indoors or outdoors. Each wedge measures 1-7/8″ x 1-1/8″ with a slant that tapers from 1/4″ to 1/16″. Stack them flat or at an angle to fill any gap – interlocking ridges prevent slipping. Easy to use, no tools required. Made in the USA.