Chungking bristles mounted into hardwood hubs with 1/4" arbor holes for use on the tapered spindles of polishing motors. Genuine Chungking bristles insure longer life & superior polishing action piece after piece. Wood hubs of seasoned, oil-treated hardwood prevent splitting and guarantee long-lasting service. Bristle tufts are staple-set into hubs to remain securely fastened until completely worn down. A wide assortment for all your applications