Rolling Stool Chair with Back: The round rolling stool is ergonomically designed with a padded backrest for optimal support,offer more professional and comfortable experience.Great for home office, salon, medical, tattoo or art studio Height Adjustable Rolling Stool: This doctor office stool is designed with hydraulic lift, adjustable handle under the seat, adjustable seat height with a 6’’ vertical height range, from 18''-24'' (not includes the back), suitable for any work Rolling Bar Stools with Wheels: 360 degrees swivel design gives you or your guest the freedom of movement and the convenience to communicate with others in any direction. And the 5 casters on the base allow for noise-free and smooth rolling Sturdy Metal Base: The vanity stool chair features chromed metal 5-star base and hydraulic lift, it is sturdy and stable, weight capacity:300lb. Great for any work shop, doctors office, tattoo and salon work Work Stool Specification: Stool Seat Diameter: 14.2’’, Stool Height adjusts from 18''-24'' (Not includes the back), Back height: 4.7''. Easy to assemble with minutes