Description:

1. Durable material: Made of high-quality 304 stainless steel, corrosion-resistant, suitable for automotive, mechanical, electronic, and various outdoor and indoor applications.. M3: Head thickness: 3.5mm Head diameter: 8mm. M4: Head thickness: 4.0mm Head diameter: 10mm. M5: Head thickness: 4.5mm Head diameter: 12mm. M6: Head thickness: 5.0mmm Head diameter: 14mm.