High quality: Office chair casters are durable, lightweight, and offer a high load capacity (up to 450 kg). Hard floors are covered with high-quality polyurethane, which protects them from damage and marks, and saves on costly repairs. Quiet and smooth: Double casters are ideal for reducing the load. They provide increased stability and make driving easier. The high-quality office chair with rubber casters is quiet and glides smoothly. Even if you work at night or play, you don't have to worry about disturbing others and can concentrate on your work. General purpose: The office chair is suitable for tiled, wooden, laminate, concrete, or vinyl floors. These high-quality 11 mm x 22 mm casters can be fitted to a wide range of chairs, such as luxury leather chairs, computer chairs, home office chairs, and other office chairs. This is a . However, they are not suitable for chairs. Custom purchase. Easy Installation: No tools are required for installation, it can be done manually. Just remove the office chair and insert the new casters. It is already assembled. It doesn't even take the time of a cup of coffee for your chair to come back to life. Because the whole process only takes 5 minutes. Color: gray + black Material: plastic Package Contents: 5 x Chair Casters 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 a little different from the real thing. The measurement allowed error is +/- 1-3 cm.