Adjusts at the touch of a lever. Activator handle works by lifting up or push down. Seat mount is sturdy die cast aluminum with black powder coat overlay finish. Power cylinder. 3 Degree tilt cast aluminum swivel, rotates 360 degrees. Use with any non-locking Spring-Lock(TM) base (sold separately). Height 22-1/2"- 29-1/2" Post Polished SS ABYC B