Sterling Silver Pin Backs Flex Shafts & Rotary There are many alloy formulas

There are many alloy formulas called nickel silver — this sheet is Nickel Alloy 752

Genuine Swiss Made — not just Swiss pattern

Made from the finest heat-tempered chrome alloy steel

25mm 36C-81 18K Yellow 10

Part # Diameter 114

Sterling Silver Pin Backs Flex Shafts & Rotary There are many alloy formulasSterling silver pin backs with a built in pin and catch mechanism, ready to be soldered to your design for secure brooches and pins. The smooth, finished hardware makes the finished piece feel solid and reliable when fastened. Features Complete pin back assembly with both pin and safety catch mechanism Ready to solder directly to your custom brooch or pin design Sterling silver construction to match common jewelry alloys Five different length options