🔩 Product Features 🔩 👍 Smooth without Burr – Smooth and shiny surface, without burr, safe and durable to use 👍 Standard Thread – Completed full thread that is both strong and straight, and will not be easily loosen 👍 Performance Grade: 8.8 – Made from high quality carbon steel material, have high hardness and a long service life surface treatment is black for good rust resistance and better performance 👍 Standardized - Manufactured according to international standard specifications from a factory certified by ISO9001: 2015
⚙️ Measuring Guide ⚙️ ⭕️ Measure with a certified Vernier Caliper ❌ Avoid using a tape measure or a ruler
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