The product came quickly and was easy to put on
I bought for my two bar stools.  I did not read the reviews or questions thoroughly enough to realize that these rings would keep the chairs stationary.  I'm unable to slide the chairs out, you have to pick up and move them as the rubber creates friction.  The product came quickly and was easy to put on, hence the 5-star review.  I've since requested a return/ refund as this product does not suit my needs.  I'll update this review if any issues with customer service.
Rating: 5 stars