... ,28mm,32mm,35mm,40mm,50mm other size could be customi Rubber Ball (Diameter 16/19/22/24/26/28/32/35 ... , φ35mm, φ40mm, φ50mm,φ83mm.2.. Application: Widely used in round screen3. Material: Nature Rubber, NBR, Ethylene-Propylene Rubber, Polyurethane Rubber 4. Color: White, Tan ...