Adjustable height stools with a poly or solid plastic seat. MODEL HEIGHT 0801 - Poly Seat 19''-27.5'' Adj 0802 - Poly Seat 23.5''-32'' Adj 0803 - Solid Plastic Seat 19''-28.5'' Adj 0804 - Solid Plastic Seat 23.5''-32'' AdjOPTIONSNon-skid GlidesQ-ball GlidesSteel Glides