This adjustable power pedestal offers an air-cushion ride and height control at the touch of a lever. Go from 13-1/2" to 20" on the Standard model and 22.5" to 29.5" on the Stand-Up model. The power piston is double chrome-plated, and each has an anodized outer cylinder and a 2" post. The Class B Locking Power Pedestal has a locking cylinder that keeps seats from spinning and improves stability. It adjusts from 13-1/2" to 20". Base not included. Available: Standard, Stand-Up, Class B Locking Power Pedestal.