Compatible with all major brands of vacuums using 1 ¼ ” wands or Hose including: Sanitaire, Pro-Team, Beam, Eureka, Hoover, Panasonic, Electrolux, Shop Vac, Euroclean, Nilfisk, Bissell, Kenmore, Oreck Industry standard size for Vacuum Cleaners and Central Vacuums 1 ¼ “ wands or vacuum hoses. The female opening is tapered from 1.26 to 1.19 inch (1 1/4'',32mm industry standard size) The 180 degree swivel neck allows easy maneuvering around furniture, or underneath tables (clearance needed is 3 inches) and easily cleans narrow gaps Firm Bristles Provides deep cleaning on hard carpets, Lifts Hidden Clogs/Dust from Mats, Wooden Crevices. 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 Hoover, Bissell, Eureka, and all other brands which use a 1.25" diameter hose or wand.