[Avoid Slippage and Wrong Teeth]: This thread repair kit enhance the connection strength and improve the connection conditions to avoid slippage and wrong teeth, and obtain excellent connection performance. [Abrasion Resistance]: This is abrasion-resistant, used in frequently disassembled parts, which can greatly increase the service life of threads. [Increase the Bearing]: This kit can increase the bearing surface, and require a strong connection force but cannot increase the diameter of the screw hole. [Anti-loosening]: This m3 inserts can prevent loosening and is suitable for occasions where products such as spacecraft require high insurance coefficients [Easy to Repair]: Install the damaged screw hole into this repair, and you can continue to use it after repair to avoid the possibility of damage to the workpiece.