Features: Steel thread inserts used in low strength materials, such as aluminum and magnesium, can avoid thread damage and achieve good connection performance, to improve connection strength andimprove connection conditions.Used for parts requiring frequent removal, it can significantly improve the life and wear resistance of the thread.Due to a certain elasticity, the thread insert can even distribute the load on each thread, eliminate tooth and tooth gaps between screw and screw hole, and absorb vibration, thereby increasing thread strength and toughnessto fatigue.It can prevent the screw from loosening, especially for products requiring a high insurance coefficient.Easy to maintain, install a threaded insert into a damaged screw hole, the hole can be used normally, to avoid part loss.Specification: Material: stainless steel Size (inner diameter * not installed * installed length) & Quantity: M6 * 1 * 1 D, 20pcs;M6*1*1.5D, 20pcs;M6*1*2D, 20pcs;M6*1*2.5D, 20pcs;M6*1*3D, 20pcs;Weight: about 117g Package List: 1 set * Threaded Inserts Note: Installed length = #D means # x diameter, for example, M6 * 1 * 1 D has installed length = 1D = 1 x 6 = 6mm.