Round FoamMaster Brush This Erie Brush 219300 FoamMaster car wash foam brush comes complete with a brass NPT female thread, gray plastic head, a soft black bumper gasket, and four stainless steel screws. The natural hog’s hairs are gentle on paint and less likely to damage vehicle paint than synthetic nylon, poly-carbonate, or polypropylene fibers that are coarse and stiff. The gray plastic head has non-scratching, leak-proof threads and safely recessed screws. 6 feed holes offer the most consistent delivery of water and foam. Erie Brush’s outstanding construction and virtually unbreakable head ensure a long life. Specifications: 4″ long bristles Handmade Black rubber bumper gasket Natural hog hair Gray plastic head Made in the U.S.A. Erie model # 219300