SEA-DOG - RUB STRAKE - 12" - 055412. Durable and corrosion-resistant 304 stainless steel rub strakes are designed to protect your boat's dock, fender, & anchor lines by preventing chafing from cap rails, gunwales, etc. Requires #8 FH fasteners (not included).. Stamped 302 Stainless Steel. A - 12". B - 4-1/2". C - 4-1/2". D - 1/4". E - 3/4"