Features: 1Using electrostatic adsorption technology large friction resistance good slip resistance. 2It is widely used in wheeled sofas chairs recliners desks pianos bed frames etc. 3It can lock furniture in place while protecting hardwood tile floor and carpet surfaces. 4The wheel caster cup uses highquality materials strong and durable no peculiar smell. 5It can be directly cushioned under the furniture increased and nonslip high strength easy to use. Specification: Condition: 100% Brand NewItem Type: Caster CupMaterial: Plastic RubberApplication: Tables and chairs with rollers in homes offices etcWorking Principle: Cushion under the foot of the table and chair to increased and anti-slipWeight: Approx. 305g / 10.8ozProduct Size: Approx. 92x90x12mm / 3.6x3.5x0.5in Package List: 4 x Caster Cup Note: 1.Pleaseallow0‑2cmerrorduetomanualmeasurement.Thanksforyourunderstanding.2.Monitorsarenotcalibratedsameitemcolordisplayedinphotosmaybeshowingslightlydifferentfromtherealobject.Pleasetaketherealoneasstandard.