Wheel size

• Smaller diameter wheels produce more rolling resistance.
• Larger diameter wheels roll easier and more freely over dirt, grit, flooring imperfections and small fallen objects. They also roll more easily over deep-carpet pile and may also carry more weight.
• A larger wheel increases chair height. Remember to consider this if seat height is critical.

Compatibility

• Please check your chair specifications prior to order.
  Friction ring stem is compatible with most, but not all, task chairs and stools.

Universal mounting stem
11mm (1/3") diameter;
19mm (3/4") long.

Installation

1. Turn the chair on its side.
2. If you have strong hands, you can remove castors by pulling. Otherwise you may need a lever, for example, a chisel or a screwdriver which you place between the castor and the chair base. If the castor stem remains caught in the base, grip the stem with pliers and pull it out. You may need to tap the pliers with a hammer until the stem loosens.
3. Push the new castor or glide into place.

Maintenance

• Sticky casters can usually be remedied with a thorough cleaning to remove accumulations of hair and debris in the caster wheels. If after cleaning the casters still do not turn easily, they should be replaced.