Makes launching your boat or watercraft easy. Slides effortlessly off bunks and into the water The new unique profile provides extra cushioning between the boat and trailer bunks Washout channels flush sand and debris off of the slides and away from the hull Safer unloading and loading because of reduced friction and stress by 400% on the trailer cranking mechanisms, ropes and hull bow hooks Allows you to unload and load your boat or watercraft in shallower water Fast and simple installation for both horizontal and vertical bunks Made from a low friction composite which is impervious to sun, weather and salt water Excellent for use on work stations, lifts, boat and watercraft dollies Also available in white PD23011 10 pieces per package Length 3 x 15 Black For more information on this product check out this video.