[Size] The thread insert has an internal thread M6x1.0mm and external thread M8x1.25mm with a small groove. This is a brand new integrated thread insert set designed to prevent screw loosening, ideal for applications requiring high safety factors. [High Quality Material] The reducer nut is made from high-quality stainless steel, offering high hardness, strength, and resistance to deformation, ensuring reliable and stable performance. The thread insert is an effective solution for thread repair. This set includes 20 thread inserts. These self-tapping inserts can be installed directly without pre-tapping. They remain securely in place and do not come loose. [International Standard] This thread insert is manufactured in accordance with international standards, ensuring high performance. It is designed and produced under strict factory quality control processes. [Wide Range of Applications] Our threaded reducer nuts feature a stable structure, excellent performance, and long service life. They are widely used in aerospace, automotive, turbine, electronic communication, computer, mold, machinery, cooler, and other manufacturing fields. Size: 15mm Material: Stainless Steel Color: Silver Package Contents: 20 x Reducing Nuts Note: The package includes only the items listed above. Other products are not included. Note: Lighting effects and display settings may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3cm.