They do the job, they're very well built, and don't damage the stands, but because they're offset, it's hard to do small adjustments with the stands position.
The Light Stand is of good quality make, and has exceeded the expectations. Glad I was able to get it. The 25mm Wheel set, is also of good quality design however, did not quite fit the 20mm Light Stand legs. No matter, a slight modification and is now a functional system. I highly recommend either item.
I put these wheels on my 16' boom stand and I just love it! Wheels have reliable locks for when you do get the placement you want.
Works great for my medium weight boom arm. Love being able to roll it around the studio. Great price for exactly what I was looking for.