group of four matching original vintage american made light factory blue enameled tubular steel machine shop adjustable stool designed and fabricated by krueger metal products, green bay, wisc. the lot of stools feature telescoping extensions for added flexibility in desired height. the circular-shaped seats with reinforced edges are fastened securely to the bases. the adjustable backrests with rounded edge contoured backrests are original and intact. the applied blue paint finish remains in great shape, with only slight wear and discoloration from prolonged use in a factory setting. priced for the pair. measure 38 1/2 x 14 1/2 inches. seat height is 25 inches.