[Size] The thread insert has 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 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-threading. They remain securely in place and do not come loose. [International Standard] This thread insert is manufactured according to international standards with strict factory quality control, ensuring high performance and consistency. [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 industries. Size: 15mm Material: Stainless steel Color: Silver Package Contents: 20 x Reducing Nuts Note: Light reflection and display differences may cause slight variations in color between the image and actual item. Measurement allowance is +/- 1-3cm.