General description Thread inserts are internally threaded fasteners that are ideal for reinforcing thin materials. Rivet nuts can be anchored to one side of a part without touching the other side. This 86-piece rivet nut gun set includes various sizes and is designed for ease of use in multiple applications. Technical specifications Includes 5 mandrels: M3, M4, M5, M6, M8 80 rivet nuts made of high-quality aluminum Corrosion-resistant and high-strength materials Thread insert pliers made of carbon steel Ergonomically designed with non-slip rubber handles Usage Drill a hole and select a rivet nut with the same diameter Mount the nut on the pliers and insert it into the hole Press the handle of the insert pliers to lock the thread insert Loosen the nut to secure the object with screws Other information