This 6” x 2-1/2” Solid elastomer caster wheel is at its best when used in medium to heavy duty push/pull applications. The elastomer material administers intense protection to flooring unlike almost all other heavy duty wheels. These wheels also endure impact, shock, water, oil, grease, and other chemicals. Composed of a single material, elastomer caster wheels are a reliable and strong choice that seldomly chip, crack or acquire flat-spots. Temperature range:-45°F to 230°F.