[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 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, including 20 pieces per pack. These self-tapping thread 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 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 product. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3cm.