Alloy steel forged pipe head, durable and long lasting. Light and portable and riveting smoothly and firmly. M3/ M4/ M5/ M6/ M8/ M12 Model Optional, electric riveting head rivet nut adapter head ram accessories. The adapter tap screw is connected to the electric drill, and the electric rivet is quickly transformed. As tool accessory, this rivet can be combined with 12-36V electric drill, perfect tool for your home DIY or outdoor use. Wide applications on production of doors and windows, riveting of aluminum alloys, automobile manufacturing and production, etc. Specification: Color: Black Type: Rivet Adaptor Material: Alloy Steel Model Option: M3 / M4 / M5 / M6 / M8 / M10 / M12 Size Chart: 5cm/1.97inch Package Includes: 1 PC Rivet Nut Tool Tip Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!