![Stainless Steel Test Kit for Differentiating 316/304 [Packaging Upgraded]](https://m.media-amazon.com/images/I/81tyzLzILKL._AC_SL3840_.jpg)






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🔍 Know your steel, own your craft—fast, precise, and foolproof!
The MARSTEP Stainless Steel Test Kit offers a rapid, reliable chemical test to distinguish 316 stainless steel from 304 and 201 grades. With over 100 tests per pack and a clear color-change indicator, this compact kit is designed for professionals needing quick, on-site verification of stainless steel quality across various materials like cutlery, pipes, and wire.
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