What you need to know about wheels.

If you are going to use a Herman Miller office chair on wood, concrete, laminate, tile or a cast floor, you will need office chair casters for hard floors. These Herman Miller C9 casters have an outer rim made of a special plastic, minimizing the chance of scratching the floor. You also need office chair casters for hard floors if you use a plastic protective plate to prevent carpet damage. Roll Control® This type of office chair wheel, when not sitting on the chair, has a slight braking action. This prevents the office chair from moving too easily across hard floors and is important for safety. When you sit down on the office chair, it cancels out the braking action and you can roll freely No-Noise™ pin An innovation is that the metal pin that attaches the wheel in the star base has 2 lock washers instead of traditionally 1 lock washer. This ensures that the wheel makes less noise when rolling. This is particularly noticeable with the seats that feature an aluminum base. Specifications

• wheel diameter 60 mm
• No-Noise™ pin ø11 mm
• unloaded brakes, Roll Control®
• complies with ANSI/BIFMA X5.1

Suitable for the following Herman Miller office chairs: Aeron Classic, Aeron Remastered, Mirra 1, Mirra 2, Embody, Sayl, Lino, Verus, Cosm