I-Rod® is an extremely strong and durable thermoplastic material machined into a half-round shape that's placed beneath pipes to prevent corrosion at pipe supports. Water cannot collect at the minimized contact point of pipe and I-Rod®, so there's no trapped moisture to allow corrosion to form. One piece of I-Rod® can support up to 10,000 lbs of weight at a single point. I-Rod® has been protecting pipes worldwide for over 35 years, and there has never been a reported failure of a pipe protected by genuine I-Rod®.