1. Specifications Type: tool. Material: Steel (housing) Rubber (grip cover). Color: Black. Size of nut rivet mandrels: M3/M4/M5/M6/M8. Total wrench length: 27 cm. Wrench thickness: 2.5 cm. Box size: 30 x 14 x 3.5 cm. 2. FeaturesIncludes a wrench for holding handles and adjusting mandrels. Steel geometry tool with nonslip grip. Comes with 5 threaded mandrels: M3, M4, M5, M6, M8. Threaded mandrel, durable, onehanded operation, laborsaving. This nut rivet tool is suitable for repairing cars, roads, furniture, or even boat building. It is also a versatile tool for repairing tools and agricultural equipment, ideal for household and outdoor use. 3. Package Contents20 x Rivet nut sets with M3 thread 20 x Rivet nut sets with M4 thread 20 x Rivet nut sets with M5 thread 20 x Rivet nut sets with M6 thread 20 x Rivet nut sets with M8 thread 5 x Nut rivet mandrels: M3/M4/M5/M6/M8 1 x Wrench 1 x Toolbox 1 x User manual 4. NotePlease allow a deviation of 13 cm due to manual measurement. Thank you for your understanding.