Fill Materials : Brass Stainless Steel Steel Bronze Titanium Crimped Wire on Special Order Configurations: Wheels: Crimped, Knotted, Fibre, Nylon. 1" to 15" diameter. Cup: Crimped, Knotted 2-3/4" to 6" diameter. Stem Mounted: Wheels, Cup, End Brush, Crimped, Knotted Tube Brush: 1/8" to 2-1/4" Miniat...