Wobble Stopper Wedge, Plastic, Polypropylene, Stackable, 1-7/8" x 1-1/8", Opaque, 6/Pack (01141) 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 measure 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. 6/Pack. Made in the USA.