The Springfield Marine Second Generation Non-Removable 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 high magnesium aluminum alloy with an anodized finish for maximum strength and corrosion protection. 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• 9" round base with 8" bolt pattern• Heavy-duty cast aluminum with anodized finish• Air-powered height adjustment from 12.5" to 15.5"• Locking Trac-Lock slide and swivel• Rotates 360° and slides 5"• Mfr. Warranty: 5 Years Anodized finish for maximum strength & corrosion protection Air-powered height adjustment from 12.5"" to 15.5"" Locking Trac-Lock slide & swivel | Springfield Marine Mainstay Package, 2-3/8" Pedestal, 12.5"-15.5"H, Slide and Swivel