These Bow Chocks provide a smooth lead for your mooring or dock lines, minimizing deck abrasion from working lines under load. Designed with rounded edges at a proper slant to prevent chafing. Left and right bow chocks included. Constructed of corrosion resistant investment cast 316 stainless steel. Installs with two #10 FH fasteners (not included). Bow Chock 4-3/4"