SUPO's special caster for applications that demand an extremely low overall height and an incredibly high capacity. Wide and little round surface PA wheel will roll and rotate smoothly. Dust-proof for both Swivel head and Wheel bearing.
Pneumatic tire absorbs chock on uneven floor by cushion of compressed air. Absolutely recommended for hospital, resort, hospital, labs, outdoor, etc. However, price is steep: 2 - 3 times higher than the domestic solid rubber one.