The Springfield Marine Clipper Pedestal System in 2-3/8" 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 2-3/8" 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.• 2-3/8" pedestal• 10" round base• Cast aluminum with anodized finish• Manual height adjustment from 13" to 18"• Non-locking Trac-Lock swivel• Mfr. Warranty: 5 years Adjusts manually from 13" to 18" high Non-locking Trac-Lock swivel | Clipper Manual Adjustable 2-3/8" Pedestal with Swivel, 13"-18"H