These premium natural bristle bare surface floor brushes are ideal for vacuuming all types of bare surface floors, including marble, hardwood, tile, linoleum, laminate, parquet, concrete and also walls. The bristles are made from natural horse hair which provides a very soft brush which will not scratch even high gloss floors such as marble. The 180 degree swivel neck allows easy maneuvering around furniture, or underneath tables. The diameter of the swivel neck measures 1.25", which will also fit nearly every central vacuum system on the market, including; NuTone, Beam, VacuFlo, Hayden, CenTec, Electrolux, Dirt Devil, Hoover, MD Manufacturing, and many others. It also works with many stand alone vacuum cleaners such as Dyson, Hoover, Bissell, Eureka, and all other brands which use a 1.25" diameter hose or wand. Risk free money back guarantee on size, fit and quality.