High-quality material: High-strength aluminum body with forged carbon steel upper handle and non-slip rubber coating. Professional rivet gun: Suitable for cars, machinery, trailers, furniture repair or boat building. Complete accessories: This 86-piece rivet gun nut kit includes 1 hand riveter, 5 mandrels M3/M4/M5/M6/M8, and 80 rivet nuts: 20 nuts M3, 20 M4, 20 M5, 10 M6, 10 M8. Meets different needs. Labor-saving: The sturdy, ergonomic one-handed tool features non-slip handles and a wrench to hold the handles and adjust the chucks. Easy to use. Portable: The tool set comes with a sturdy carrying case, easy to carry and keeps things organized.