SCI Stainless Steel Fittings &Nipples are a cost effective replacement for brass. They offer more Corrosion, Heat and Pressure resistance than Brass and have always been Lead Free. Stainless Steel doesn't cause electrolysis so you can use it with any other metal. Marine, Automotive, Agricultural, Irrigation and Plumbing... the better choice is SCI Stainless Steel.; ; Brand Name: Smith-Cooper End 1 Diameter: 3/4 in. End 1 Type: FPT Material: Stainless Steel Product Type: Cap Average Lead Content: Lead-Free Packaging Type: Bagged