Upgrade the rolling performance and style of your office chair with these Slipstick 3 Rollerblade Office Chair Caster Wheels! Premium quality 3 urethane rubber rollerblade wheels provide ultra-smooth and safe rolling on any flooring from hardwood to carpet. You will be the envy of all your coworkers. These casters eliminate the need to cover your floor with an unattractive chair mat and will modernize the look of your office chair/desk area. Designed to fit most rolling chairs and attach in seconds, these casters feature universal standard size 7/16 x 7/8 stems and make an ideal set of replacement casters for rolling chairs, stools, and furniture. This set of 5 heavy-duty casters will support up to 500 pounds (100 pounds per wheel) and are covered by a lifetime free replacement warranty.