Harbor Mate"s CMK provides a permanent mounting solution for securing coolers, tackleboxes, and other block-shaped items to a boat floorboard or other stable surface. Each kit includes (4) corner pieces with (3) pre-drilled holes for permanent mounting and (2) loops for hook-end tie-down attachment. Includes (2) shock cords with stainless steel center hooks designed to latch on to the cooler or tackle box. Installation screws are not included - Be sure to check with the boat manufacturer to select proper marine screws and hardware required for this task. Boat Cooler & Tacklebox Mounting Tie-Down Kit * Package includes (4) plastic cooler corners and (2) elastic bungee cords * Corner braces include pre-drilled mounting holes and (2) tie-down cord attachment points * Great for creating a dedicated place for holding coolers, tackle boxes, and more on a boat * Bungees have a stainless steel center hook for cooler attachment * Requires drilling for permanent installation, screws are not included