[Size] The thread insert has an internal thread M6x1.0mm and external thread M8x1.25mm with a small groove. This is a integrated thread insert set designed to prevent screw loosening, ideal for applications requiring high security. [High Quality Material] The reducer nut is made of high-quality stainless steel, offering high hardness, strength, and resistance to deformation, ensuring reliable and stable performance of the thread inserts. The thread insert is an effective solution for thread repair and includes 20 pieces. These self-tapping thread inserts can be installed directly without pre-tapping. They are secure and do not easily come loose. [Standard] This thread insert is manufactured to high performance standards. It is designed and produced in accordance with industry specifications and undergoes strict factory quality control. [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, steam turbines, electronic communications, computers, lighting, mechanical equipment, coolers, 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. Light reflection and display differences may cause slight variations between the color in the image and the actual product. Measurement may vary by +/- 1-3cm.