Upgrade the rolling performance and style of your office chair with these standout floor protecting rollerblade caster wheels from Slipstick! these premium casters feature special 3” rubber roller wheels that provide Ultra smooth and safe rolling on any flooring from hardwood to carpet. 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. Available in 3 different color variations: Black/Black, chrome/grey, and black/red.