Clam cleat from Sea-Dog is manufactured from marine-grade nylon for ultimate durability in marine environments. Cleat is ideal for most applications where high loads or rope surges are not likely to be encountered. Corrosion-resistant design. Great for control lines on dinghies, kayaks and greenhouse vents. For use with 1/8" - 1/4" rope. Uses #8 FH fasteners. 2-1/16"L x 5/8"W. 1-7/16" in between mounting holes.