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Specification: Type: Wire Thread Insert Metric diameter: 2D Inner thread diameter: 6mm External thread diameter: 7.5mm Length: 8mm Material: 304 Stainless Steel Color: Silver Package includes: 30 x Wire Thread Insert Stainless steel material, wire thread repair plug-in. The free running blade is made of precision formed austenitic stainless steel wire rod, which is made of spiral coil, and its appearance is similar to that of spring. When installed with any of various manual or automatic tools, they provide a strong permanent internal thread to resist heat and corrosion. Once assembled, their position can be maintained by the radial pressure between the coil and the side of the screw hole. It can be used to require a firm connection without increasing the screw hole diameter in thin body parts. It can be used to connect and fasten hard and brittle materials such as ceramics, bakelite and glass. Effectively prevent fragmentation. It can be used to remove and install parts frequently, and prolong the service life of the screw hole which is often rotated. It can be used in aluminum, magnesium, wood, plastic, rubber and other low-strength alloy materials which are easy to deform, as well as low-strength materials that are easy to deform, so as to avoid slipping, spalling and tooth dislocation.