Engineered for strength, durability, and simplicity! Made of hot-dipped galvanized steel. Stationary dock hardware is designed with 7/16" holes for 3/8" carriage bolts. Used as a footing. May be bolted to a 2" x 6" piece of lumber and joined to an adjacent leg base plate for increased stability. 2-1/4" I.D. 5-1/4"L x 5-1/4"W x 2-3/8"H. Click here for layout and application examples 5-1/4"L x 5-1/4"W x 2-3/8"H | Stationary Dock Hardware - Base Plate