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Definitely the best for low pile carpet.It does roll and not janky at all, it is better than those two wheels or rollerbalde caster.If you have a low pile carpet, i definitely recommend you to try this out first

I have bought several types of wheels for my work chair as I roll around every day in a classroom. I have used the roller blade style wheels, and they all eventually seem to become harder to pivot when you change direction. I thought because they are nylon and stick to the floor a bit, and the blade style doesn't allow the pivot as well as these ball ones might. Worth a try. So far, the ball style does seem to pivot on 'the ball' rather than need the motion like the blade style seems to. The blade style would need some movement foward to pivot (so my theory goes). Time will tell. The chairs I put these on eventually fail because the mounts are plastic and they rip out of the holes damaging the chair due to the torgue and stress put on when I change directions. Yes, I'm a power user. You can see in the picture the contact patch with the surface. Similar to the blade style of wheel. However, I think they will pivot more smoothly on those hard floors. My only negative is that the casing is plastic whereas on the blade wheels, the runners holding the wheels are steel. May not be an issue, given the picture shows a baby elephant for weight, so, I'm a bit less than an elephant in weight. Time will tell. Definitely love all these wheels though. They are all terrain in the office and transition from surface to surface. And, if you happen to have office chair races, you will win HANDS DOWN. Have a glide competition, see how far you can glide on one push, and these will soar. Lots of fun, worth the money, and coworkers will be envious.

J'ai du linoleum très epais et avec des roues classiques à double roues c'était très dur de bouger. Elles s'adapte bien au gamer mais sur mon sol c'est mieux sans le changement que j'espérais !

I almost purchased a new chair because the old "standard" wheels on my chair were impossible to move around on without constant adjusting & readjusting the chair position, swiveling every which way so that it would glide across the floor. It was a constant, never-ending battle.The cost of a new quality chair is way more expensive than I had anticipated or was willing to spend. And given that my current "quality high end" chair is in excellent condition, I thought .... check & see if replacement wheels are sold for office chairs. After measuring all aspects of my current chair to make sure that any replacement wheels that I was considering purchasing would work with & fit with my current office chair. I was pleasantly pleased to find that I had 3 choices.#1, Replace with the standard cheap garbage wheels that come with all office chairs.#2, Replace with the rollerblade style, which would increase the height of the chair to a height where my chair would be so high that my legs would no longer fit under my desk or, if I were to lower the chair height so my legs would fit, my computer would be so high on the desk & I would be so low in the chair that it would destroy my neck.#3, Replace with these round wheels, which the height matches exactly the height of the chair wheels that are being replaced.Based on the dozens of reviews that I read, along with the fact that the height of these office wheel replacements are 2 & 7/8" [73 mm] which is the same height as the wheels I was replacing, I decided to purchase these. They fit perfectly, it took less than 5 minutes to remove the old wheels and replace them with these wheels. These wheels are excellent. My chair rolls smoothly and is silent now. No more adjusting and readjusting to get the chair to move. "I love my new silent smooth chair!"I literally saved hundreds of dollars by simply purchasing replacement wheels for under $30, instead of buying a new chair, which by the way, all new chairs, regardless of cost ... whether the cost is over $4K or under $100 they all come with the same cheap worthless wheels, so I would have needed to purchase new wheels had I chosen a new chair.UPDATE AFTER 9 MONTHS OF DAILY USE:I sill absolutely love these chair wheels. They continue work perfectly. The only downside is that the black coloring of the wheels has worn off in the center all around the where the wheel meets the floor, the part of the wheel that actually touches the floor is now clear. I've attached a photo of the wheels as advertised/when purchased and after 9 months of continuous daily chair use. I will leave my rating at 5 stars because these wheels continue to work perfectly and given that I really do not care about the color wearing off since the wheel color has absolutely zero impact on the wheel performance.