Description● Nuts Size : M5 , M6 , M8 , M10 , M12● Size : Nut Inner Diameter● Material : 304 Stainless Steel● Standard : Metric● Use standard vernier calipers to measure. Screws are typical parts. Do now not use tape measure, ruler, or pupil ruler to measure.Package include: According in your choose. Choose your need from above drop down menu.