Feature: 1. In 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. 2. High quality stainless steel material can make sure the durability and stability of the product 3. The 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. 4. It is convenient and quick to convert metric and inch threaded holes with wire threaded inserts. 5. There is a box which you can store and convenient to carry Specification: Item Type: Threaded InsertMaterial: Stainless Steel . Package List: 20 x M3x0.5x1D Threaded Insert20 x M3x0.5x1.5D Threaded Insert20 x M3x0.5x2D Threaded Insert20 x M3x0.5x2.5D Threaded Insert20 x M3x0.5x3D Threaded Insert20 x M4x0.7x1D Threaded Insert20 x M4x0.7x1.5D Threaded Insert20 x M4x0.7x2D Threaded Insert20 x M4x0.7x2.5D Threaded Insert20 x M4x0.7x3D Threaded Insert20 x M5x0.8x1D Threaded Insert20 x M5x0.8x1.5D Threaded Insert20 x M5x0.8x2D Threaded Insert20 x M5x0.8x2.5D Threaded Insert20 x M5x0.8x3D Threaded Insert