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This is a Everflow Supplies baseboard tee with a cast brass construction and c x f x c ends. In particular, the tee Branches into a copper pipe with equal diameter forming an elbow with a female thread end as the straight. Furthermore, the connections are 3/4 inch x 1/8 inch x 3/4 inch in diameter for copper pipe and steel pipe sizes. In addition, this fitting is rated for a maximum pressure of 125 LB and meets the ansi B16.4 standard.

Everflow Supplies CFCT3418 Cast Brass Baseboard Tee Fitting with Solder Cup to Female Thread Connection and Solder Cup Branch 3/4" x 1/8" x 3/4" - B01BTYRBYI