Features Steel thread inserts can effectively improve the screw connection, which significantly improves reliability. Used in all kinds of materials with low strength, thread inserts can largely improve the wear resistance of the screw connection and avoid thread damage. Functions: The product is made of high-quality materials with good wear resistance, durability and long service life. It prevents screws from loosening, especially for products that require high insurance factors. Fine workmanship, excellent performance, light weight and light frequently needed to remove components. Through a rigorous testing of the manufacturer's specifications, 100% of the factory tests are carried out to ensure the highest quality products. Since there is some elasticity, the thread insertion can even eliminate the slope and teeth between the screw and the screw bore and absorb the vibration, increasing thread connection intensity and fatigue resistance. Specification: Material: 304 stainless steel. Size (inner diameter * installation distance * installation length) Quantity: M3 x 0.5 x 1.5D (20 pieces). M4 x 0.7 x 1.5D (20 pieces). M5 x 0.8 x 1.5 D (20 pieces). M6 x 1.5D (10 pieces). M8 x 1.25 x 1.5D (5 pieces). M3 x 0.5 D x 3D (20 pieces). M4 x 0.7 x 3D (20 pieces). M5 x 0.8 x 3D (20 pieces). M6 x 1 x 3D (10 pieces). M8 x 1.25 x 3D (5 pieces). Weight: 110g/3.9oz (Approx.) Package contents: 150 x thread inserts. Note: installed length = #D means number x diameter, for example M3*0.5*1.5D has an installed length = 1.5D = 1.5 x 3 = 4.5 mm. Package List