"R & D Engine Mount - 5/8 Inch Stud - 70-201lbs Capacity Per Mount Brand New Includes Manufacturer's Warranty, Product # 800-036 (300lbs) Product # 800-041 (70-201lbs) Product # 800-037 (50-175lbs) Product # 800-010 (80-230lbs) Product # 800-011 (120-410lbs) Product # 800-014 (300-680lbs) The R & D Marine Engine Mount w/ 4 inch footprint is designed for for the rigors of marine applications