Description <br> CASTERS YOU CAN KEEP FOR LIFE - Our Premium replacement caster wheel stem diameter is 7/16 inch(11mm),stem length is 7/8 inch(22mm),The heavy duty design supports up to 500 lbs as a set of 5 <br> SMOOTH QUIET ROLLING - Wheel materials are made of high-quality polyurethanes, which are high mechanical strength, wear resistance, shock absorption and low-noise. These features help roll easily and cause no squeaky sounds or noise of any kind. <br> SAFE FOR FLOORS - Smoothly and quietly roll around on any hardwood, ceramic tile, wood, carpet, especially cement floors without scratching, please pay attention to safety due to less resistance force <br> EASY TO INSTALL - Simply pull your old casters out, then plug the new wheels in, universally fit for various standard seats: work stools, office chairs, dining chairs, desk wheels, tool carts etc <br> <br> colour:Black <br> Material:PU <br> size:50mm <br> <br> Package Contents: <br> 5 x Caster Wheels <br> <br> Only the above package content, other products are not included. <br> Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. <br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store