This square dusting brush has long, soft natural hair bristles around its perimeter. These bristles will not curl and mat like synthetic bristles do. It is nicer than the combination duster/upholstery nozzle which comes standard on many uprights and Mighty Mite canisters. It mates with all Eureka steel and plastic wands and hoses. It is the standard 1 1/4" American standard size so it fits some other brands as well. For similar products see our list of Eureka Vacuum Accessories.