... filled with tire/polyurethane tire it is free of air inflation, abrasion proof, anti-corrosion. RIM/pu filled with tire/polyurethane ... tire:It is a band tyre, which is free of air inflation, abrasion proof, anti-corrosion, harmless even in ... made in different colors.PU material filled into rubber tyre:The inflation free tyre is light in weight and durable in service, it ...