Add a footring and some height to your existing chair with this Stool Footring kit. Each kit contains the parts to add 7.5" inch of adjustable height. Made from durable chrome finished metal. Fits Work Smart chairs, please check with manufacturer for compatibility - Chairs sold separately. This product has achieved GREENGUARD Certification, meaning it is recognized as an interior product made with materials that have low chemical emissions, improving the quality of the air in which it is used.