... bought four of these - yes they roll very easily across wood floors - but they do sit comfortably ...
922668
I bought four of these - yes they roll very easily across wood floors - but they do sit comfortably and have a great sleek look.  Thanks to everyone who responded to my question!
4069758
Pros:
- When you fold the three squares up, as it is designed to do, it stands independently and can be easily stored tucked beside/behind other furniture.
- Handles make it easy to grab and move around.
- Affordable
- Plenty of cushion for exercises/stretches where pressure is more evenly distributed -- lying on back or side, sitting, etc -- for this 140 lb PT patient

Neutral:
- Enough cushioning to provide almost complete (but not quite complete) relief when I am holding a stretch that puts significant pressure on my knees -- I can feel the hardwood floor just touch the tip of my knees through the mat.

Cons:
- Mat is not very dense and is developing divots in the areas where I regularly put down a lot of pressure -- ie, where my knees usually are when I'm holding certain stretches.  Obviously shifting about a bit helps with this, but imagine it won't hold up for more than a year without large areas becoming quite thin, at this rate.
4142996
Easy to use and slides nicely on my hardwood and carpet. Hasn't scratched my hardwood (I made sure that the area I was using it on was free of any debris that might get caught between the slider and floor). I took off a star because they are a bit small for my feet (I think I got about 7 inches in diameter when I measured these sliders). Using them for my hands they worked just fine. I can't comment much on durability because I only had these for a week or so.
1910812
These Office Chair Caster Wheels have been working great for my office chair which is used on carpet in my home office. They snapped in with ease, and appear to fit well. The "tires" themselves are similar to the smooth rubber style used on some roller blades, and result in a nice smooth roll on hard surfaces. Two of the five casters have a locking brake mechanism to keep the chair stationary if desired.
2267801
Solid wood construction with good quality castors. However, the manufacturer states that the castors are designed for carpeted floors (not hard surfaces like wood or linoleum). We put an area rug down on our hardwood floor and may put an office chair clear plastic pad on top for easy rolling. The chair is easy to mount on it's pedestal with only two simple parts and no tools required. The seat is extra wide and deep for bulky bottom seating. The upholstery is good and the seating is very supportive, but some may need an auxiliary seat pillow which could be easily added. We recommend this chair, but the best way to choose one would be to sit in a whole showroom of chairs before you buy one. This chair is worth the extra cost compared to the local office supply chain office chair if you need a "furniture look".
443697
This chair mat allows me to roll around with ease as I reach for items near my desk. It did acquire some dents, but this is not a decorative item.
4626081
These wheels are great!  Very easily installed and the rolling is effortless, even on a "wood plank" tile floor.  In fact, they roll a bit too effortlessly at times.  The chair seems to wander a bit if I'm not paying attention.  Not a problem, though.  I'm considering replacing the wheels on another office chair with another set.  Great product, Great shipping.  Excellent customer service and follow-up.
4380971
On wood floors carpet runners still slide with these pads.  Not much sliding, but enough that you have to keep"aligning" them.  Do a ago job of protecting the floors which is really the important issue for me
3800638
Does not transition well, but works just fine on hardwood floors
3921161
But when you have two rugs on top of each other with pad between each other they still move. But Great  on wooden floors.
4908216
So, like others, we bought two of these and stacked them together.  On the plus side, it does hold a lot for a small, awkward, typically unused space.  You won't be sorry on that score.

My biggest problem with it is it doesn't roll as easily as I would have liked.  Our kitchen floor is tiled, so it may be that moving over the grout makes it harder to roll.  I wish it had a handle on the front to make moving it back and forth a one-handed operation.  I have to hold it at one place and pull it from the center to get it to move.

In general, it's a useful piece, but for the price just don't look for something that is super sturdy.
1465003
If you have hard floors and your work space requires you to scoot around a little. these wheels are for you. They are very well constructed and I expect them to last longer than the chair itself. The price is seemed bit high for wheels, but once I got them on my chair I was extremely satisfied.
334314
I bought this table for a 1 bedroom apartment with wood floors and it looks great. I really enjoy this product and consider this a good purchase. Given the cost of the item, it is a good value although maybe someday I will try to figure out how to get it to be a little more stable (maybe weld the metal connections or change the rubber protectors on the bottoms of the legs - not sure). I believe it would seat 4 people easily but it could get fairly crowded. Right now I have two chairs that fit very well with it.
4471229
we had purchased a desk chair a few months ago but the wheels kept leaving black marks or our tile floor.  I ordered these and want to let you know how pleased we are with them.  They were easily installed, and they roll like I'm on a cloud. and no more marks because they are made out of a clear material.  Super satisfied!
4074774
I recently replaced the floor in my home office with wood laminate planking.  The wheels of my swivel chair scuffed and marked the floor and would lead to excessive wear.  The floor guy suggested trying these wheels over the ones that sold in his store.  Needles to say, he was correct...  No marks... no scuffs and, the chair moves better than it did with the original casters.  I recomend these highly.
3678452
They were easy to install and they roll smoothly on our hardwood floors.
3849273
They do exactly what they are supposed to do.  No scratches on the wood floors. Furniture is easy to move when needed.  Love the assortment.