feature: Effortless: Extended handle with thickened hinge maximizes leverage for quick and easy squeezing and riveting. Set of 100 Rivet Nuts: Comes with M3/M4/M5 rivet nuts, 20 each size; M6/M8/M10/M12 rivet nuts, 10 each size. Metric Mandrels: Comes with 7 interchangeable mandrel/ nosepiece kits in metric M3/M4/M5/M6/M8/M10/M12. Meticulously Built: Made of high-quality A3 steel, it is durable enough to handle heavy riveting jobs. Non-Slip Handle: The ergonomic handle is covered with non-slip soft plastic for a secure grip. EASY TO STORAGE: Comes with a molded carrying case and each piece is marked to keep tools organized and easy to transport. Specification: Material: Steel Color: blue and black Mandrel size: M3/M4/M5/M6/M8/M10/M12