We are Offering Surgeons Stool.1. Height Adjustable By Foot Anti-static Cushion. 1. Robust Construction from Steel / Aluminium Tubular Material 2. Mobile with Castors and 3-5 Leg Cast Ring Base 3. Adjustable Height: Range 500 700mm 4. Seat Diameter: 360mm 5.seamless Upholstery with Anti-static Cushion and Easy Cleaning6.contoured Backrest and Sound Base