Description:

1. Durable material: Made of high-quality black 304 stainless steel, corrosion-resistant, suitable for automotive, mechanical, electronic, and various outdoor and indoor applications.. 2. Size: mm. M2: Head diameter: 3.8-4.0 Head thickness: 0.8-0.9 M2.5: Head diameter: 4.8-5.0 Head thickness: 0.8-0.9. M3: Head diameter: 5.8-6.0 Head thickness: 0.9-1.0 M4: Head diameter: 7.8-8.0 Head thickness: 1.2-1.3. M5: Head diameter: 8.6-9.5 Head thickness: 1.3-1.4 M6: Head diameter: 11.8-12.0 Head thickness: 1.7-2.0 M8: Head diameter: 15.5-16.0 Head thickness: 2.4-2.8.