Boat Seat Pedestal Base Mount Kit with 11"Seat Extension Pole & 7" x 7"Base Plate - 3/4" Lock-In Aluminum Pedestal for Marine & Fishing Boats 【Fit for Most Boats】Designed as a universal base for standard non-threaded 3/4" pin posts, this 7"x7" pedestal fits most marine, fishing, bass, Jon, and pontoon boats—ideal for mounting or replacing seats. 【Sturdy Aluminum Construction】 Made of premium corrosion-resistant aluminum with reinforced ribs and an alloy steel locking pin, this kit ensures solid load-bearing performance and safe, secure seating in all marine conditions. 【Complete & Easy-to-Install Kit】 Includes everything needed: a 7"x7" base plate, 11" tall pin post socket, and lock-in 3/4" pin mount. Simple setup lets you quickly add or upgrade seating on your boat deck or dock.