The Springfield Marine Non-Removable Pedestal System in 2-7/8" offers a heavy-duty base and post for today's larger and faster recreational boats. The base is a permanent mold aluminum alloy with an anodized finish. A 2-7/8" heavy-duty extruded post is pressed and hydra-formed into the base which mechanically forms them together. This proprietary process allows maximum strength for a sturdy pedestal.• 2-7/8" pedestal• 9" round base with anodized finish• 9" from deck to top of swivel• Trac-Lock locking swivel rotates 360° Locking Trac-Lock swivel Swivels 360° | Explorer Second Generation 2-7/8" Pedestal Package, 9"H, Locking Swivel