[Size] The thread insert has an internal thread M6x1.0mm and external thread M8x1.25mm with a small groove. This is a integrated thread set designed to prevent loosening of screws, ideal for applications requiring high reliability. [] The reducer nut is made from high-quality stainless steel, offering high hardness, strength, and resistance to deformation, ensuring reliable and stable performance of the thread inserts. This set includes 20 thread inserts and serves as an effective solution for thread repair. These self-tapping thread inserts can be installed directly without pre-threading. They remain securely in place and do not easily come loose. [International Standard] This thread insert is manufactured under strict quality standards to ensure high performance. It is designed and produced according to international standards with strict factory quality control. [Wide Range of Applications] Our threaded reducer nuts feature a stable structure, excellent performance, and long service life. They are commonly used in aerospace, automotive, steam turbines, electronic communications, computers, lighting, molds, machinery, coolers, and other manufacturing industries. Size: 15mm Material: Stainless Steel Color: Silver Package Contents: 20 x Reducing Nuts Only the above package content is included; other items are not included. Note: Lighting reflections and display differences may cause slight variations in color between the image and the actual item. Measurement tolerance: +/- 1-3cm.