Professional Accessories --- Internal Threads widely used in the automotive industry, rail vehicle industry, shipbuilding industry, household appliances, engineering machinery, commercial machinery, electronic products, engineering plastics, high-grade furniture, aluminum die-casting and other industries. - m8 x 1.25 Easy to install --- Self-tapping screws are easy and quick to install, requiring only one assembly tool and almost no defects. Strong anti-vibration performance prevents looseness. Strong proof to vibration, - helicoil m6 Reinforced strength --- The self-tapping screw sleeve does not need to be tapped in advance, and can be directly screwed into the specific hole reserved for the base material. For the female thread of the broken tooth, the same screw as the original can be used, which is economical and beautiful, and can be added to new products. Thread strength - m8 to m12 Anti-vibration --- The self-tapping screw sleeve can solve the problem of thread crushing and effectively improve the bonding strength with the base metal. The contact area is large and can withstand strong tension. Lower strength materials can be used in product design. - insert m12 Durable material --- Made of high quality carbene steel for durability. There is no clearance with the base metal, and the base material also has good air tightness if it contains bubbles. - m8 to m12 reducer Specification: Condition: 100% 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