The Plumber's Choice 3/8 in. Copper Tee Fitting with Solder Cups (5-Pack) 0038CCTE-5 - The Home Depot
Inner Diameter: 16mm / 5/8 inch; Outer Diameter: 18mm / 0.71 inch; Thickness: 1mm / 0.04 inch; Total Length: 45mm / 1.77 inch; Total Width: 45mm /
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