Leveling or height adjustable casters offer a simple, elegant and advanced solution to the age-old problem of how do you make something completely stationary and still have the ability to move it when you would like to.
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.