Silver-plated 1mm round snake chain necklace - a popular jewelry staple. These came from different vendors causing the lengths to range from ~23.5-24". If you need a shorter or longer length, we have available in another listing.
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Price is for 1 chain, in the size you select stated in the title. An alloy is the base metal. This picture is enlarged to show detail.
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There are plenty of on-line measurement converters should you require.