The Polished Aluminum Flip-Up Dock Cleat has a hot-dipped galvanized silver finish over the cast aluminum base. Made from marine-grade Almag 35 cast aluminum. Distinctive and highly functional for tieing up your watercraft. Flips up when in use and folds back into the base when not in use. Round and smooth edges. The low-profile cleat flips up easily for use. Easy to install. An enlarged counter-sink hole makes installation easy with a socket. Features 2 (6 in.) or 3 (8 in.) mounting holes. The 6 in. fits 3/8 in. bolts. The 8 in. fits 7/16 in. bolts. It can be through-bolt or lag-bolted.