As said above, it is a nice set of wheels. You might indicate the difference between what wheels are on the chair these in your promotion. Can you be sure one isn't buying an extra set of the same thing? I never checked, but it's a thought. Compared to previous casters these are 100% better just by reason of smooth movement and no discoloration.
- How accurate was the sizing? Perfect fit
- Please tell us about the quality of the product. Good as far as I know about these things. Importantly, it doesn't leave marks on the floor, even when wet, and moves smoothly and quietly.
- Was the product free of any manufacturer defects? Yes -- except an instruction sheet indicating pressure is needed to insert them, especially for arthritic people like myself.