Casters

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  2.5-inch Standard Carpet Casters
  Designed for use on low-to-medium pile carpet, such as commercial or Berber, this 2.5-inch diameter caster has wheels of durable black nylon.
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  2.5-inch Hard Floor or Carpet Roll-Away Resistant Casters with Quiet Roll Technology
  Designed to be used on hard surfaces such as wood, ceramic tile, vinyl tile, or carpeted floors, this 2.5-inch diameter caster features a subtle braking feature that prevents chairs from rolling away when they are not occupied. Casters are made of durable black nylon, with a soft tread that gives the chair better traction and reduces noise on hard surfaces. Quiet Roll Technology controls vibration of casters within the base when the chair rolls.