#1 Keel protection for your boat. Easy, Do It Yourself Installation; Guaranteed to last the lifetime of your boat; Available in 11 colors and various lengths; Prevent costly repairs; Maintain the value of your boat; 100% Made in the USA; Works on fiberglass and most aluminum boats; The keel of most boats is the center line running down the bottom of your boat. It generally protrudes and slices into the water. Because of this, the keel both slices the water first, and also bumps into concrete, ramps, docks, and rocky shores first. But it doesn't have to. KeelShield was developed to protect your most vulnerable, and constant point of contact. Made of pure Urethane Polymers, this 5" wide rugged shield is the strongest and most durable protection for you keel from abrasions, scratches, and scars.KeelShield is easy to install, just Prep-Peel-Stick (see our video below). Once its on you are good to go. Installation does not require time to cure. And with our exclusive 3M adhesive system, it stays on, we guarantee it. **Does not work on Crestliner boats** Keel Shield SizeBoat Length4 ft13 ft and Less5 ftup to 14 ft6 ft15 to 16 ft7 ft17 to 18 ft8 ft19 to 21 ft9 ft22 to 24 ft10 ft25 to 26 ft11 ft27 to 28 ft12 ft29 to 30 ftClick here to download KeelShield Fiberglass Application InstructionsClick here to download KeelShield Aluminum Application Instructions