✅ SAFE FOR ALL FLOORS: Stop damaging your expensive hard wood floors and replace it with soft scratch-free caster wheels. Encased with reinforced polycarbonate and metal frame, our rollerblade style wheels are best to roll on all surfaces! Hardwood, carpet or marble. Finally throw away that annoying chair mat! ✅ POLYCARBONATE: What sets us apart from other office chair replacement brands? We use the highest quality materials in our wheels. Made from bullet-proof polycarbonate, backed by reinforced metal frame, our wheels can withstand up to 500lbs! Don’t believe us? See for yourself. We are the first wheels on the market to use bullet-proof materials ✅ SMOOTH & QUIET ROLLING: Work like a ninja! Remain focused and relaxed with the these caster wheels. Precision ball bearings in the swivel and axel provide smooth, easy gliding with absolutely no sounds or noise of any kind. Our wheels fit ALL Common office chairs and requires no tools to install. Each wheel measures 3” in diameter.