Universal Stem Size - 7/16" x 7/8" (11mm x 22mm) fit 96% of all standard office chairs sold in the market (Pls Check the wheels size of your chair to ensure it will fit before ordering). Rotating 360 Degrees and loading up to 550 lbs for all 5 metal chair casters. Heavy Duty & Safe for All Floors - Stop damaging your expensive hard wood floors. This rollerblade style wheels are encased with soft polyurethane material. Smooth and Quiet Rolling - The vibration reducing polyurethane wheels will provide smooth and silent rolling. Does Not Leave Any Marks Or Scratches. Easy to Install - No tools required. Pull out your old office desk chair wheels and push in the new casters until stem is firmly seated and secure. 100% Money-Back Guaranteed - We offer a no hassle, no risk, 100% guarantee.
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