PU foamed wheel 10years experienceHigh quality and low priceISO9001 EN840Strong hidden1. Good quality and best price. 2. Rim can be plastic or metal. 3. Bearing can be any type 4. Surface can be saveral foams 5. Meterial : PU 6. Size : 6' x 2' 7. Color: as your need. 8. Hardness: above 75 made in different hardness as your demand.