7 74A95 New member Jan 19, 2023 #2 A Google search found this: https://www.google.com/search?q=Wha...i57j33i160l3.972j0j7&sourceid=chrome&ie=UTF-8
A Google search found this: https://www.google.com/search?q=Wha...i57j33i160l3.972j0j7&sourceid=chrome&ie=UTF-8
U Unclenick Staff Jan 20, 2023 #3 As the link states, a copper alloy (usually red (low zinc) or yellow (higher zinc) brass alloy), plus a good many made for the commercial market have nickel-plated cups.
As the link states, a copper alloy (usually red (low zinc) or yellow (higher zinc) brass alloy), plus a good many made for the commercial market have nickel-plated cups.