Blind Rivet Installation A blind rivet consists of two pieces that are pre-assembled: the rivet body (usually just referred to as the rivet) and inside it is the setting mandrel (commonly just called the mandrel). Installation of blind rivets is easy: (1) insert the rivet into a hole that passes through the items to be joined; (2) insert the mandrel into the special installation tool; (3) "set" the rivet by pulling on the mandrel, which creates a bulge that permanently and securely fastens the items. At a predetermined point, the exposed mandrel will break off inside the rivet. FAQ                                                                        Q: Are you trading company or manufacturer ? A: We are factory with  more than 10 years experience. Q: How long is your delivery time? A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.