Steel threaded inserts can effectively improve screw connections, greatly improving reliability. Used in all types of low-strength materials, thread inserts can greatly improve the wear-resistant performance of screw connections and prevent thread damage. Features: Steel thread inserts used in low-strength materials such as aluminum and magnesium can prevent thread damage and achieve good connection performance, thereby improving connection strength and improving connection condition. Used for parts that require frequent removal, it can greatly improve the service life and wear resistance of screw threads. Due to a certain elasticity, the threaded insert can evenly distribute the load on each thread, eliminate the pitch and tooth gap between the screw and the screw hole, and absorb vibration, thereby increasing the strength and fatigue resistance of the screw threaded connection. It can also prevent screw loosening, especially used for products that require a high coefficient of insurance. Easy to maintain, install threaded insert into a damaged screw hole, then the screw hole can be used normally to prevent part loss. Specification: Material: 304 Stainless Steel Size(Inner diameter*uninstalled*installed length) & Quantity: M14*2*2D(5pcs) M16 x 2 x 2D(5pcs) M12 x 1.75 x 2D(10pcs) M10 x 1.5 x 2D(10pcs) M8 x 1.25 x 2D(10pcs) M6 x 1 x 2D(10pcs) M5 x 0.8 x 2D(10pcs) M4 x 0.7 x 2D(10pcs) M3 x 0.5 x 2D(10pcs) Weight: Approx. 304g Content: 80 threaded inserts Note: Installed length = 2D means 2 x diameter, for example, M3 x 0.5 x 2D has an installed length = 2D = 2 x 3 = 6 mm.