Easy installation! Lifetime warranty! It protects your boat's keel against sand, rocks, concrete ramps & oyster beds. Wear and damage to your boat's keel can break down its protective gelcoat finish, allowing water to reach and destroy the fiberglass laminates. Keelguard, the powerful abrasion-resistant protector, prolongs the life of your boat like nothing else. Scotch-Brite pad, 3M primer, burnishing tool and DVD with instructions are included.