Adjustable draughting kit - a moving foot ring and set of glides To be used on fixed back chairs Supplied with all fixings needed Sturdy and comfortable for use on higher chairs, for example on lab chairs Black plastic base, with a chrome footrest ring A hi-rise gas lift and adjustable foot ring accessory to enable adaptation of chairs to be used in factory and laboratory environments. Base fitted with glides to maintain stability - we advise never to use a draughting kit with a chair that tilts, or has castors fitted.