Carpet Cleaning Accessories. Polyester brush. Outside rows of 1-1/4" trim bristles scrub carpet. Inside rows of 5/16" trim bristles hold absorbent looped microfiber bonnet in place. Replacement bonnets available packed 6 per case. Universal Style Brush Driver. For Most Swing Machines: Betco, Cassidy, Clarke, Dart, Edic, Eureka, General, Hawk, Kent/Euroclean, Lawlor, Mastercraft, Mercury, NSS, Pacific, Powr-Flite, Pullman-Holt, SSS, Tennant, Thoromatic, Tornado(Breuer), United(Unico), Viper, Windsor