Whatever you're looking for in brass fittings then Amazon has them all. For plumbing, hardware, building supplies, heating and cooling, lighting and electrical or outdoor power and lawns. From various brands, prices and sizes the brass fittings are all found at Amazon. Nelson Industrial Brass Pipe and Hose Fitting for Female Hose to Female Hose, Double Male #50573
The LR Nelson Industrial Double Male Pip and Hose Fitting is designed to make connecting a 3/4-inch and 3/4-inch male garden hose to a female garden hose possible. 
American Standard 3375.502.299 Colony Soft Three-Handle Bath/Shower Fitting, Chrome Brass
Other products by American Standard
American Standard 3375.502 Colony Soft 3-Handle Bath/Shower, Chrome and Polished BrassAmerican Standard 3375.502 Colony Soft 3-Handle Bath/Shower, Chrome and Polished Brass Features:; Ceramic Disc Valving Assures Drip-Free for Life Performance; Cast Brass Valve Body; Easy Clean Shower Head; Coordinating Lavatory and Bidet Faucets Available; Limited Lifetime Warranty - Function and Finish; ADA Approved Lever Handle; Metal Lever Handles; I.P.S. Tub Spout; 1/2" Union (Female NPT) Inlet x 1/2" IPS Outlet* Image shown may vary by color, finish and or material
the brass fittings are found at amazon.com
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