Features: Pratical Conversion Tool Set: with this tool set, you can convert your 3/8 ratchet wrench or your electric drill into a manual or electric rivet machine and you no longer need to purchase a separate riveting tool. 10 Rivet Nuts Sizes: There are 10 different rivet nuts sizes for you to use. Easy to Use: It is easy for you to install this conversion part into your electric drills and no need too much professional skills. Storage Box: Comes with a storage box for you to store these accessories neatly in the box and easy for you to carry. If you are interested in this product, come and have a try, it will not let you down. Specifications: Nut Size: M3, M4, M5, M6, M8, 1/4-20, 10-24, 10-32, 8-32, 6-32 Please note; the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: Metal colour: red Package Contents: 1 x rivetnut tool rivetnut kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.