Office Chair Caster Wheels Replacement (Set of 5) - Heavy Duty & Safe for All Floors Including Hardwood & Carpets - 3" Rollerblade Style with Easy Universal Fit SAFE FOR ALL FLOORS - Many chair wheels use cheap and low quality materials that destroy your flooring. The Royal Office's Premium wheels are encased with soft, polyurethane material. our rollerblade style wheels are guaranteed not to scratch or leave marks on any surface. HEAVY DUTY DESIGN - The heavy duty design supports up to 650 lbs as a set of 5. We offer the strongest chair wheels on Amazon. QUIET & SMOOTH ROLLING - Our Precision ball bearings provide smooth, easy rolling while causing no squeaky sounds or noise of any kind. EXCELLENT FOR OFFICE CHAIRS- Fits 99% office chairs, with easy no-tool installation LIFETIME GUARANTEE: 100% MONEY BACK GURANTEE- NO QUESTION ASKED! We stand behind the quality of our products, If you are not 100% satisfied with the quality of the casters you will get a 100% refund immediately.