Alvin Chair Height Extension Kit, 18" Diameter

The Alvin CK38 Chair Height Extension Kit consists of cylindrical steel shafts, tapered to lock into the chair base and extra-strong foot rings. This extension kit adds approximately 7-1/2" to the height of the chair. Foot rings can be adjusted vertically and then locked at the desired height. It has an 18" diameter, chrome plated steel foot ring with black spokes. This CK38 Chair Height Extension Kit fit the following chair models: CH277, CH290, CH444, CH555, DC205, DC207B, CH112 and CH222.