Gamvdout Plate Casters Office Chair Caster with Brake 3 Inch Replacement Computer Desk Wheels PU Polyurethane Quiet Rolling Universal Standard Stem11x22mm Load 550lb Pack of 5-Black

3inch casters are made of industrialgrade steel precision ball double bearings and durable polyurethane beautiful and quieter rolling; heavyduty chromeplated metal bracket; after pressure test each wheel is loaded with 50Kg/110 pounds can bear Years of daily use. Easy to change 5 minutes no need to use maintenance tools with a new ring grip suitable for various office chairs. Pull out the old office chair caster and push in the new wheel until the valve stem is firmly seated and fixed and you can start rolling. Easy to install These casters are designed with a universal standard size valve stem so you can fold any of your furniture into a modern eyecatching work chair or stool conversion. The rugged PU casters are considered the absolute best upgrade for countless other office chairs. The stem is 7/16 inches (11mm) in diameter x 7/8 inches (22mm) in length. All surface protection Our floor casters have smooth round polyurethane wheels a set of 5 can protect various types of floors such as carpets hardwood laminates tiles slate etc. Leave any scratches abrasions or marks; no chair cushion required! Improve efficiency Super smooth office chair wheels can increase your productivity! Now you can use these highquality wheels to reduce the physical stress on your joints enjoy smooth rolling and minimize noise! The combination of ultraquiet design and wheel style will allow you to focus on your work without distraction!