Premium Caster Office Chair Caster Wheel, Black, Set of 5 (ZT08) $4.79 B00UCJ4ONS
Premium Office Chair Caster Wheel Universal Standard Size 11mm Stem Diameter X 22mm Stem Length (7/16" X 7/8") Compatible with Most Chairs Made with High Quality Non-slip Materials for Hardwood Floors, Heavy Duty up to 100 Lb Max Weight, the Best Lifetime B00UCJG1KM