It looks like you're looking for a 1-inch × ¾-inch CPVC Brass MTA (Male Threaded Adapter) from Supreme. This fitting is used to connect CPVC pipes to metal pipes or fittings via a threaded connection.

Here are the key details you might need:

• Material: CPVC with a brass threaded insert

• Size: 1-inch socket (CPVC side) × ¾-inch male threaded (Brass side)

• Brand: Supreme

• Use Case: Plumbing applications, hot & cold water systems