This is an Supply Giant 90 degrees elbow with a male threaded connect on one end and a copper solder cup on the other end. Both connects have a nominal diameter of 1 inch, for use with copper pipe and threaded female fittings of the same nominal size. In particular, this elbow is made of lead free brass and it is manufactured to meet or exceed the ansi 16.4 standard. Furthermore, upc and csa certified this product for meeting the nsf 61-g standards. ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.