ZB0901Description: * Ingenious structure. Such a cleat vaguely resembles two halves of a clam shell held back to back. * A clam cleat (or jam cleat) in which the rope is held between two fluted stationary pieces. * This boat parts was made of premium material, Quality construction built to last, high weather-proof, rust-proof so you won't be worry about the quality even after a long time using it. * This product is very easy to use. Easy to install and remove. * Easy to adjust while sailing to maintain the ideal sail shape.