Description:1. Practical Converter Kit: With this tool kit you can convert a 3/8 ratchet wrench or electric drill into a handheld or electric riveting machine. You no longer need to buy a separate rivet tool. 2.5 Rivet Nut Size: There are different sizes of rivet nut to use: M3, M4, M5, M6 and M83. Easy to use: You can easily install this conversion part in your electrical appliance without too much professional skills4. Storage Box: Equipped with storage box, these accessories can be neatly stored in the box for easy carrying5. Complete Attachment Set: This attachment kit contains all the attachments required in the conversion process Specifications: Material: Aluminum plastic Scope of application: Household Applicable scenario: Home decoration Model: Red cap adapter Weight: 075kg Single kit specifications: 21*12*5cm Head: M3 M4 M5 M6 M8 Package includes: 1 set * conversion head Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.