Brass Pipe Fitting, 2 x 1 Inch Hex Bushing

That's what this fitting is built for. The hex bushing steps a 2-inch pipe thread down to a 1-inch pipe thread, so it fits right in where you need to reduce between those two sizes. The hex profile gives you a solid grip point for a wrench, which makes installation a good bit easier than wrestling with a smooth-bodied fitting.

Yes, this brass hex bushing is designed to reduce from a 2-inch pipe size to a 1-inch pipe size.