Hydro Flow Bulkhead Thread/Thread 3/4 in Hole Size 1-1/2 in (1/Bag)

Hydro Flow?? Bulk Head fittings are designed to create a water tight seal when transferring liquid from or to a storage container/reservoir. These fittings are made from durable ABS Plastic and come with double gaskets for a secure seal as well as double female threads to incorporate fittings or filters into the bulk head. Manufactured in the U.S.A.