304 Stainless Steel, 1 1/4 in x 1 1/4 in Fitting Pipe Size, Union - 1LUF6|400U111N114 - Grainger
SteelTek 1-1/4-in Structural Galvanized Flange in the Structural Pipe & Fittings department at Lowes.com
Smith Cooper 150# Black Malleable Iron 1/4 in. Cross Pipe Fittings - Threaded - John M. Ellsworth Co. Inc.
Metalwork 304 Stainless Steel Pipe Fitting, Street Tee, Male Run Tee, 1/2" NPT Male x 1/2" NPT Female x 1/2" NPT Female, 1 Pc: Amazon.com: Industrial & Scientific