Wise Fixed Height Seat Pedestal With Locking Seat MountOutfit your boat seats with these Wise Fixed Height Seat Pedestals. These pedestals feature a 2-7/8" diameter aluminum post with a 9" diameter base. Includes seat spider mount with an adjustable knob and locking paddle handle. This pedestal is available in multiple heights.Features: 2-7/8" Diameter post w/ polished anodized aluminum construction; 9" Diameter base w/ recessed mounting holes; 360 Degree rotation with locking knob; Class AD certified per ABYC standards; 3 Year manufacturer's warranty; Standard 5-1/4" hole pattern fits virtually all marine seat brandsHeights Available: 15"; 18"; 24";