STANDARD ASSISTANT'S STOOL · Pneumatic 21″ to 28″ Seat Height Adjustment · Strong Rotary Arm Pad Support · Height Adjustable Arm Pad Support · Easy Entry/Exit · Round Seat Provides Easy Position Adjustment · Strong & Stable 5 Legged Base · Fixed Foot Ring · Powder Coated Base · Smooth Twin Wheel Casters · Simplified Adjustments