The DiversiTech® C295-0090 3/4 in. OD x 5/8 in. ID 45 Degree 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.