The inner diameter is 1.25 incn(32mm), fits all vacuum cleaners accepting 1-1/4incn inner diameter attachment such as Hoover, Bissell, Eureka, Royal, Dirt Devil,Electrolux,Panasonic, Kenmore,Shop Vac, Oreck etc.
Elastic and soft horsehair, prevent the floor from being scratched. The Head Swovels 360 Degrees and the brush enable it get around and under furniture easily.
Size:12 inches (300mm)wide, covers larger surface.not fit Miele,Dyson,Shark
The front brustles have spaces between them to let larger particles through. Also works well on rugs.