New “Toolless Quick-Change Head" design allows for easy changing of mandrels and nose pieces by hand; Disassembly of tool never required, unique spring loaded inner hex; sleeve automatically locks the rotation of hand installed mandrel; Shorter handle with double compound hinges that maximize leverage; 6 interchangeable mandrel/nosepiece sets and 10pc rivet nuts in Metric M5, M6, & M8 and in SAE 10-24, 1/4-20, & 5/16-18; Includes 10 pieces of each of the following rivet nuts: M5, M6, M8,10-24, 1/4-20 and 5/16-18; Versatile and powerful hand nut/thread setting riveter, takes the hard work out of setting rivet nuts; Ideal for working in hard-to-reach area; Ergonomic grip for easy operation