Modular Bunk Guide On's self centering bunk glide on's with interlocking modular sections. Designed to fit various bunk board lengths. Ideal for painted, fiberglass, or aluminum boats. Fits 2 x 6 x 8 ft. standard bunk boards. Kit includes 4 each - 3 feet sections, 4 each - 1 feet end sections and mounting hardware. Slide on or off with less effort and easy to install.