SharkBite now offers PEX-a tubing and expansion fittings. Made for faster plumbing installations than rigid pipe, SharkBite PEX-a offers superior flexibility, the highest-rated chlorine resistance and six-month UV resistance. Additionally, its poly expansion fittings are made from a high-performance polymer designed to resist corrosion. This system is held to the highest standards by SharkBite's engineers and in-house quality requirements, providing plumbing contractors with the quality and efficiency they expect from the brand.