Eliminate costly repairs from rocks, concrete ramps and abrasive sand with the longest lasting, most trusted DIY keel protector. Made in the USA, only Megaware KeelGuard provides an exclusive self-sealing contoured edge (no messy sealants needed), ultra-tough polymer and urethane composite technology, UV inhibitors and anti-fungal agents for unparalleled quality and durability. 3M premium pressure sensitive adhesive for maximum strength and bonding. Suggested lengths are minimum required lengths based on boat size. You can always order longer lengths for additional protection.