Feature: 1. This rivet nut machine adopts chrome-molybdenum steel mandrels, 3mm high-strength handles makes the rivet nut machine more sturdy and durable. 2. This product maximizes leverage and saves you 40% of your effort. Ergonomic handles with double compound hinges to improve durability. 3. The fast change head design allows for easy changing of mandrels and nose pieces by hand, no additional tools needed. 4.This rivet machine comes with 7 interchangeable mandrels sets and 100pcs rivets nuts in various sizes, making sure to meet all your needs. 5. Ideal when there's limited access to the rear of a panel, great for sheet metal fabrication; The box is easy to store and carry.