East to use:1" NPT Threaded Standard American. Nut mates with threads exactly, hardness of metal is excellent. Boat Thru-Hull Fitting can be used with standard American threaded fitting and standard American valves
Wide application:A good choice for scuppers, sink drains and bilge overboard drains,widely used for boating,bass boat,fishing boat, kayak, canoe, yacht,etc.
Tips:There is a description of the size in our picture. If you have any questions about the product and size, please contact us