Your Shopping Cart Continue shopping “Springfield Jon Boat Seat Clamp – 8″ to 20-1/2″” has been added to your cart. Item Your Options Quantity Price Springfield KingPin™ 7" x 7" Offset - Stainless Steel - Square Base (Standard) Springfield KingPin™ 7" x 7" Offset - Stainless Steel - Square Base (Standard) quantity $69.99 × Springfield Jon Boat Seat Clamp - 8" to 20-1/2" Springfield Jon Boat Seat Clamp - 8" to 20-1/2" quantity $75.99 × Coupon: Apply coupon Update cart Continue Shopping Cart totals Subtotal $145.98 Sales Tax $8.76 Total $154.74 Proceed to checkout