1. Made of millions of tiny air pockets providing the tire with bounce  and load handling characteristics smiliar to an air-filled tire, but never going flat

2. Excellent load capacity, light weight

3. Lifetime usage, never worry about the flat tire again, save time and labour cost on inflating /replacing tire

4. Sizes range : 8", 10", 12", 13", 14", 16"

5. Plain bore, ball bearing, roller bearing all available