Your Shopping Cart Continue shopping “Springfield KingPin™ 7″ x 7″ Stainless Steel Square Base (Threaded)” has been added to your cart. Item Your Options Quantity Price Springfield Jon Boat Seat Clamp - 8" to 20-1/2" Springfield Jon Boat Seat Clamp - 8" to 20-1/2" quantity $75.99 × Springfield KingPin™ Power-Rise Stand-Up Package Threaded Pin Springfield KingPin™ Power-Rise Stand-Up Package Threaded Pin quantity $329.99 × Springfield KingPin™ 7" x 7" Stainless Steel Square Base (Threaded) Springfield KingPin™ 7" x 7" Stainless Steel Square Base (Threaded) quantity $74.99 × Coupon: Apply coupon Update cart Continue Shopping Cart totals Subtotal $480.97 Sales Tax $28.86 Total $509.83 Proceed to checkout