The DiversiTech® C272-0002 3/8 in. OD x 1/2 in. ID 90 Degree Long Turn Street Ell Ftg. x C copper tubing has a seamless construction and can form a permanent, leak-tight connection that resists corrosion and scaling. It's perfect for water, gas, sanitation, air conditioning, refrigeration, and fire protection systems. Ideal in both residential and commercial applications.