Office chair wheels, 5-pack, fits chairs (11mm x 22.5mm) Heavy Duty JR2025032601188ONLY fits chairs: Make sure the wheel stem size is 11mm x 22.5mm, otherwise these replacement wheels will not fit your chair.Heavy Duty: Each wheel can carry up to 30 kg, and the entire set of 5 wheels can carry up to a maximum of 150 kg, safe and stable for everyone.Smooth and quiet: Smooth and quiet gliding are the priorities for office chair wheels. These wheels are very flexible when you roll the chair; not much noise with premium rubber, an excellent choice for the office.Perfect for all floors: Made of nylon rubber, these wheels are designed to protect hardwood floors, laminate, tile, slate, and all other hard floors from damage and scratches.Easy installation: Just follow the instructions with a few simple steps, then it's done, no tools required for installation, easy for everyone.