The Edson Shatterproof Bronze Strainer is used to prevent clogging of a suction hose, pipe and pump. The resilience, corrosive resistance and non-sparking character of marine grade bronze will provide extended life over aluminum, cast steel or plastic strainers. This Edson strainer has 1½" FNPT (Female National Pipe Threads) for easy attachment to hose or pipe fittings ending with 1½" MNPT (Male National Pipe Threads).