12" Lower Bolt Transom Support (TSP-2-DP) by T-H Marine. Transom Support Plate - Transom Washer - Transom Toughener. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost. Features Distributes Outboard Engine Weight to Protect Your Transom Distributes Stress of Engine Bolts High Quality Cast Aluminum 3/8" Thick Simple to install Fits lower bolt pattern of outboard Specifications Country of Origin: United States of America Length: 12"