Ring Kit conversion suitable for the Ergo Blaster & Ergo Blaster PU Chairs, complete with adjustable foot ring. * Ideal for light counter work * Gas lift height adjustment * Foot ring for off floor support * Height adjustable footrest * Durable five star base with glides for stability * Requires easy self-assembly * For light use up to 3 hours a day. Suggested medium user weight 90kg. NB Not suitable for heavy duty commercial use * Self Assembly Required Please note this product is delivered direct from our supplier & may take a little longer to arrive.