Skateboard Deck Ribs / Rails - Help your rail and coping slides with these useful add-ons, a must for bowl / transition skaters! Sliding on hand rails, flat bar rails, coping or curbs can over time destroy the bottom of your skate deck. Thankfully, this type of damage is eliminated when you attach ribs or rails to your skateboard deck. Rails are thin, hard plastic strips that screw onto the edges of the deck to act as a shield to prevent scratching, splintering and chipping. Not only do rails protect your deck, but they will also improve your skateboards sliding performance. Struggling to slide round that corner of the bowl? Slides slowing down and sticking on the coping or ledge? Try adding rails and you'll slide faster, smoother and for longer!