Item Type: Threaded Insert Material: Stainless Steel Package List 20 x M3x0.5x1D Threaded Insert 20 x M3x0.5x1.5D Threaded Insert 20 x M3x0.5x2D Threaded Insert 20 x M3x0.5x2.5D Threaded Insert 20 x M3x0.5x3D Threaded Insert 20 x M4x0.7x1D Threaded Insert 20 x M4x0.7x1.5D Threaded Insert 20 x M4x0.7x2D Threaded Insert 20 x M4x0.7x2.5D Threaded Insert 20 x M4x0.7x3D Threaded Insert 20 x M5x0.8x1D Threaded Insert 20 x M5x0.8x1.5D Threaded Insert 20 x M5x0.8x2D Threaded Insert 20 x M5x0.8x2.5D Threaded Insert 20 x M5x0.8x3D Threaded Insert 1In the event of a threading error or repair of a damaged female threaded hole, a threaded insert can be used as a means of repair to provide a cost-effective recovery of the screw hole. 2High quality stainless steel material can make sure the durability and stability of the product 3The wire threaded insert set are placed in the screw hole of the workpiece such as aluminum alloy to form a high-strength, wear-resistant, high-accuracy female thread. 4It is convenient and quick to convert metric and inch threaded holes with wire threaded inserts. 5There is a box which you can store and convenient to carry