High quality: Office chair wheels are durable, lightweight, and have a high load capacity (up to 450 kg). The hard floor wheels are coated with high-quality polyurethane, providing protection against floor damage and marks, helping to avoid costly floor repairs. Quiet and smooth: Double-wheel design helps reduce load pressure, offering greater stability and easier steering compared to single-wheel casters. The high-quality rubber wheels operate quietly and glide smoothly. Ideal for home offices or shared spaces, they allow you to focus on work without disturbing others, even during late hours or gaming sessions. Wide compatibility: Suitable for use on tile, parquet, laminate, concrete, and vinyl flooring. These 11mm x 22mm casters fit a variety of office chairs, including leather executive chairs, computer chairs, and home office seating. Not recommended for use on carpeted floors. Please measure your caster stem before purchase. Easy installation: No tools required. Simply remove the old casters and press in the new ones by hand. Installation takes only a few minutes and can be completed quickly and effortlessly. Color: Gray + black Material: Plastic Package Contents: 5 x Chair wheels Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.