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' standard bunk boards. Kit includes 4 ea. - 3' sections, 4 ea. - 1' end sections and mounting hardware. Slide on or off with less effort. Easy to Install.