The drain plug kit is a traditional threaded boat plug with screws, Sold as the picture
Boat transom drain plug kit, fits 1 inch Hole, flange dia is 50mm/2 inch, boat plug diameter is 1/2 in NPT.Pay attention to the DIA of the Flange is 50mm
Be be made from 316 stainless steel.Boat drain plug fits salt water & UV resistant
Boat garboard drain with stainless steel plug allows bilge to drain when a vessel is hauled out of the water.
Boat bilge plug is 1 inch deep for the guide from the flange going into the hull.