The Lightweight transom gudgeon is extremely small and light weight. it is designed to be used as a top gudgeon on small lightweight boats. Do not use this part on a heavy helmed boat, it is always best to over spec the component.The fitting has 2 5mm countersunk fixing holes for attaching to the back of the boat. The Gudgeon is made to fit the Sea Sure Pintle Range. Packing pieces are available to increase the distance that the fitting sits off the back of the boat. The part number for this is 18.52