Workstools shouldn't require so much attention that adjusting them becomes a job unto itself. Office Master's low-maintenance, easy-to-clean and affordable workstools are the perfect solution for any industrial workplace or specialty application. The WS23 features pneumatic seat height adjustment, back height adjustment, a 10" black footring, and back depth adjustment. Made from puncture-resistant black polyurethane material. designed for cashiers, dentists, filing clerks, and workers in assembly lines, job shops, and a wide range of other industrial environments.Arm Options:BR-2 (What’s this?)BR-5 (What’s this?)Caster Options:Carpet Casters (What’s this?) Rubber Casters (What’s this?) Reverse Braking Casters (What’s this?) Safety Soft Casters (What’s this?) Glides (What’s this?)