Vacuum Replacement Dust Brush For Kirby, Kenmore, Eureka, Oreck 1-1/4" Aftermarket Product Sourced Exclusively by EFP - Exact Fit Parts Inner Diameter: 32mm / 1-1/4" Outside Diameter: 35mm / 1-3/8" Includes (1) Horse Hair Dusting Brush Tool Attachments as pictured This brush is made of high quality and environmental protected plastic and horse hair, the brush bristle is soft to prevent scoring its surfaces.