This handy Aqua-Dynamic hose plug is made of galvanized iron to seal leaks in a flash. Simply screw the male threaded plug into any 1/4″ hose opening that is under pressure up to 150 psi and the leak stops. Ideal for plumbers, contractors, and do-it-yourselfers, this plug quickly seals leaks so you can move on to the next job. Useful for everything from irrigation systems to industrial pipes, this plug ensures your plumbing stays airtight.