The Mainstay Pedestal by Springfield. Adjust height with a squeeze of the handle! Made of corrosion-resistant aluminum, with anodized finish and a sealed, gas-powered cylinder. Easy-to-find handle adjusts height quickly with a simple squeeze! Includes Quad-Action 360 degree locking swivel. Pick yours and order today! AVAILABLE SEPARATELY: The Mainstay by Springfield 14 1/2" to 19 1/2" Non-Locking Passenger with Slide; The Mainstay by Springfield 14 1/2" to 19 1/2" Non-Locking Passenger; The Mainstay by Springfield 14 1/2" to 19 1/2" Locking Driver with Slide; The Mainstay by Springfield 14 1/2" to 19 1/2" Locking Driver; The Mainstay by Springfield 12 1/2" to 15 1/2" Non-Locking with Slide; The Mainstay by Springfield 12 1/2" to 15 1/2" Locking Driver; The Mainstay by Springfield 12 1/2" to 15 1/2" Locking Driver with Slide - word search in our store for "Springfield". The Mainstay by Springfield 12 1/2" to 15 1/2" Non-Locking