Features Made of high quality carobn steel, durable to use. Large contact area, it can bear strong tension. Strong resistance to vibration which can prevent loosening. Easy and convenient to install, quickly and simply. Widely used in the automotive industry, rail vehicle industry, shipbuilding industry, household appliances, construction machinery, business machinery, electronic products, engineering plastics, advanced furniture, aluminum die-casting and other industri Features: 1. Made of high quality carobn steel, durable to use. 2. Largecontact area, it can bear strong tension. 3. Strong resistance to vibrationwhich can prevent loosening. 4. Easy and convenient to install, quickly and simply. 5.Widely used in the automotive industry, rail vehicle industry, shipbuilding industry, household appliances, construction machinery, business machinery, electronic products, engineering plastics, advanced furniture, aluminum die-casting and other industries. 6. Available in nine styles for your choice. Specification: Condition: 100% Brand New Material:Carbon Steel(Plating Color Zinc) Optional Style: Inner M2*0.4 Outer M4.5*0.5, Inner M4*0.7 Outer M6.5*0.75, Inner M3*0.5 Outer M5*0.5, Inner M5*0.8 Outer M8*1.0, Inner M6*1.0 Outer M9*1.0, Inner M6*1.0 Outer M10*1.5, Inner M8*1.25 Outer M12*1.5, Inner M10*1.5 Outer M14*1.5, Inner M12*1.75 Outer M16*1.5 Weight: Approx. 9-229g / 0.3-8.1oz Length: Approx. Inner M2*0.4 Outer M4.5*0.5: 6mm / 0.2in Inner M4*0.7 Outer M6.5*0.75: 8mm / 0.3in Inner M3*0.5 Outer M5*0.5: 6mm / 0.2in Inner M5*0.8 Outer M8*1.0: 10mm / 0.4in Inner M6*1.0 Outer M9*1.0: 12mm / 0.5in Inner M6*1.0 Outer M10*1.5: 14mm / 0.6in Inner M8*1.25 Outer M12*1.5: 15mm / 0.6in Inner M10*1.5 Outer M14*1.5: 18mm / 0.7in Inner M12*1.75 Outer M16*1.5: 22mm / 0.9in Package List: 20Pcs Thread Inserts Package List