Frontier and UNLIMITED Fusion Seat Base features super sturdy construction, so your Fusion seat or Pinnacle seat has a rock solid foundation. Hardware included: 4x 1.5” hex bolts, 4x 1/4-20 lock nuts, 8xwashers, 4x 1” Mighty Bolts, 4x SpinGrips
Works with Unlimited, U10, Frontier 12 and Frontier 10 Model Boats