[Always Protected] Newly styled upgraded office chair wheels are made with heavy-duty powder-coated carbon metallic brackets, precision ball bearings and an extra-thick polyurethane layer. Say goodbye to your outdated low-quality plastic wheels.Chair roller wheels guaranteed to guard wood, hardwood, laminate, vinyl, tile, carpet all day long, present scratch-free protection and save money on chair cushions.[Smoother Ball Shape] Casters' ball-shaped casters increase maneuverability with a resilient polyurethane rubber feel and precision ball bearings in the shaft. Giving the chair the flexibility to show 360° on any surface. Casters for workplace chair rolls silky smooth and silently, making it superb for the joy of roaming freely round shared office spaces, official gaming environments.[Effective Investment] Our roller chair wheels function universal compatibility grip loop bars of commercial grade metallic (0.9x0.4in) that fit 99% of other office chair brands. The workplace chair substitute wheel supreme substitute for you to transform that squeaky, noisy chair. IMPORTANT NOTE: It does not match for IKEA chairs.[Supports 2000 LBS] Our heavy obligation workplace chair wheels function unmarried wheels which are 2 inches large to supply a bigger landing area. Provides smarter and balanced weight distribution. Each caster can hold up to 440 pounds. A set of five workplace chair wheels can delay to 2200 lbs.Colour:BlackMaterial:PlasticPackage Contents:4 * WheelOnly the above package content, different products are usually not included.Note: Light mirrored image and various exhibits may cause the color of the object in the photo a little various from the real thing. The size allowed error is +/- 1-3cm.