[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 thread repair kit includes 20 thread inserts. These self-tapping thread inserts can be installed directly without pre-threading. Secure fit, not easily detached. [International Standard] This thread insert is manufactured under strict quality standards to ensure high performance. Designed and produced according to international standards with rigorous 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, 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 part of this sale. Note: Lighting effects and monitor settings may cause slight variations in color between the image and the actual item. Measurement tolerance: +/- 1-3cm.