I don't even know what they're usually used for. I bought mine to combat the perennial problem of office chair sagging. Adjust the chair to the desired height, roll the baby nice and tight directly over the chair cylinder and you're done. Hasn't moved since I installed it a few months ago. In addition, it is almost invisible and also reusable.
FKG 99502HNR Bearing Width Pre Lubricated
5 Review
π§ High-Quality TIMKEN 6203 2RSC3 6203 2RS Bearing - Size: 17X40X12mm
4 Review
Electric Guitar Strings Ernie Ball 2221 Regular Slinky - (10-46)
5 Review
π Wheels Manufacturing Ball Retainer Bag: Convenient Storage and Protection for Your Ball Retainers
6 Review