One pare of CR2032 button cells case , made of 316 stainless steel with sealing O-ring , which has better resistant of corrosion than SS304

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Dimension ( Dia X H): 20mm x 3.2mm

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Weight: 0.12Oz

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It excellent for developing new rechargeable battery and battery electrodes

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Q: What is Differences between SS304 and SS316 stainless steel ?

A: 316 SS has higher Nickel content than SS304, and also contains about 2.5% molybdenum for improved resistance to corrosion from chlorides (found in salt, seawater, sweat, etc.). Lots more info on the Internet.