Made of high quality carbon steel, durable for use. Large contact area provides strong tension resistance. Offers strong resistance to vibration, helping prevent loosening. Easy and convenient to install. Widely used in automotive, rail vehicle, shipbuilding, household appliances, construction machinery, business machinery, electronics, engineering plastics, furniture, aluminum die-casting, and other industrial applications. Available in nine styles. Condition: Material: Carbon Steel Style Options: Inner M2x0.4 Outer M4.5x0.5, Inner M4x0.7 Outer M6.5x0.75, Inner M3x0.5 Outer M5x0.5, Inner M5x0.8 Outer M8x1.0, Inner M6x1.0 Outer M9x1.0, Inner M6x1.0 Outer M10x1.5, Inner M8x1.25 Outer M12x1.5, Inner M10x1.5 Outer M14x1.5, Inner M12x1.75 Outer M16x1.5 Weight: Approx. 9–229g (0.3–8.1oz) Length: - Inner M2x0.4 Outer M4.5x0.5: 6mm (0.2in) - Inner M4x0.7 Outer M6.5x0.75: 8mm (0.3in) - Inner M3x0.5 Outer M5x0.5: 6mm (0.2in) - Inner M5x0.8 Outer M8x1.0: 10mm (0.4in) - Inner M6x1.0 Outer M9x1.0: 12mm (0.5in) - Inner M6x1.0 Outer M10x1.5: 14mm (0.6in) - Inner M8x1.25 Outer M12x1.5: 15mm (0.6in) - Inner M10x1.5 Outer M14x1.5: 18mm (0.7in) - Inner M12x1.75 Outer M16x1.5: 22mm (0.9in) Package List: 20 Pcs Thread Inserts