Gen3 Marine Dock CleatGen3's Dock Cleat is a great choice of cleat for small recreational boats and docks. With its heavy duty galvanized finish, this cleat is corrosion resistant and made to last in saltwater or freshwater. Gen3 Marine's dock cleat is designed with smooth edges to protect your line and is capable of handling different sizes of dock lines.Features: Galvanized finish; Smooth edges; Compatible in saltwater and freshwater environments; Installation note: Can be installed using 3/8" hex head bolts. To determine the length of bolt needed, measure the thickness of the surface you're mounting the cleat to and add 2.25". (The 2.25" is the thickness of the cleat where the mounting holes are located).