Ergonomic design: manual rivet nut setting kit, simple operation, effort saving, high reliability and comfort of ergonomic design, comfortable grip, reduce hand fatigue, non-slip and tear-resistant wear. Heavy Duty Alloy Steel: The rivet gun is made from heavy duty alloy steel with heat-treated finish, featuring high hardness and durability, toughness and not easy to damage. Quick Change: Tool-less quick-change head design makes it easy to change chucks and noses quickly Self-release nut design: rotatable separation screw, tightly riveted, rotate and back off the screw and nut for quick separation. LABOR SAVING: The professional rivet nut tool kit features a longer carbon steel arm maximizing leverage to save user energy. p>