Springfield Taper-Lock Trac-Lock 2-3/8" Locking Seat Mount [1100031-L1]Taper Lock Trac Lock 2 3 8" Locking Seat Mount 2 3 8 post mount with bushing for snug fit. Made of high strength aluminum, with powder coat finish. Centrally located locking handle, easy to reach with left or right hand. Features: Rotates 360 For use with 2 3 8 fixed height pedestals Post Adds 3 4 To Height Of Pedestal WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other