High Quality: Office chair wheels are durable, lightweight, and have a high load capacity (up to 450 kg). Hard floors are coated with high-quality polyurethane – this provides protection against floor damage and marks, saving you money on expensive floor repairs. Quiet and Non-Slip: Double wheels are perfect for reducing stress. This gives you stability and makes steering easier than with a single wheel. The office chair's high-quality rubber wheels are quiet and glide smoothly. Even if you work at night or play games, you don't have to worry about disturbing others, so you can focus on your work. General Use: The office chair can be used on tile, parquet, laminate, concrete, or vinyl floors. These 11mm x 22mm high-quality wheels can be mounted on a variety of chairs, such as luxurious leather armchairs, computer chairs, home office chairs, and other office chairs. This is a standard size. However, they are not suitable for use on chairs. Please measure before purchasing. Easy Installation: No tools are required for installation, it can be done manually. Just remove the old office chair and push in the new wheels, and it's already installed. It won't even take a cup of coffee for your chair to come back to life. The whole process only takes 5 minutes. Color: Grey + Black Material: Plastic Package Contents: 5 x Chair Wheels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.