The Davis & Sanford PSGAIRLIFT25B Pedestal Airlift has a maximum height of 47 1/2 Inches, minimum height of 31 1/2 Inches and a pneumatic center column cylinder that provides smooth and easy "floating action" height adjustment for cameras weighing up to 25 lbs. Featuring a broad base to prevent tipping and quiet 4" deluxe wheels with ball bearings and positive step-on locking brake for both swivel and rolling action, this pneumatic tripod is perfect for teleprompters and studio cameras.