Protect your boat's hull while beaching, trailering or as you pull up on shore with the KeelShield® Keel Guard. Made of 100% polyurethane for strength and durability, the guard provides defense for fiberglass and most aluminum boats. The grooved design keeps your keel protected from damage, impact and abrasion while in shallow water and from submerged objects. Prep-Peel-Stick 3M adhesive system for easy installation with paper towels and isopropyl alcohol (not included).