Features: Experience quiet, smooth mobility with these 3 inch transparent polyurethane office chair caster wheels, designed for noise less movement on hard floors while offering enhancing durability. Featuring heavy duty iron cores and universal 11mm stem compatibility, these replacement wheels combine robust construction with universally fitment for most swivel chairs. Ideal for home office users and DIY enthusiasts seeking easy, tool less upgrades to their workspaces furniture accessories. Perfect for hardwood floors in busy offices or study rooms, their 360 degree swivel design ensures effortlessly maneuverability during work hours. Engineered with wide load distribution and scratch resistant surfaces, these casters maintain rolling efficiency across various floor types while supporting up to 150lbs. Specifications: Component: transparent polyurethane + iron Size: 3 inches Color: gold,black Diameter of the plugs rod:11mm Load-bearing capacity:100kg 360-degree universal rotation Use scenario: Office chair replacement casters | Suitable for hardwood floors and carpets | quiet and smooth movement Package Includes: 5pcs Office Chair Casters note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.