Description: STARTO 14" rivet nut tool is lightweight and easy to carry with. The 14-inch long carbon steel arm and ergonomic rubbery handles with double compound hinges maximizing leverage provides a labour-saving way to fasten the nuts without extra tools. Rivet Nut Setter Kit comes with 6pcs Metric / SAE interchangeable mandrel parts ( 1/4-20, 5/16-18, 3/8-16, M6, M8, M10, ) and 21 pieces rivet nuts in the rugged blow carry case. It is widely used in fields like household, workshop, and automotive ,railway, Light Industrial Products and etc. Packing List 1 × 14" rivet nut gun 6 × Metric / SAE interchangeable mandrel parts (1/4-20, 5/16-18, 3/8-16, M6, M8, M10) 1 × multifunction spanner 1 × tool box 1 ×21 pieces rivet nuts( 5 pieces for each mandrel 1/4-20 5/16-18, 3/8-16, 2 pieces for each mandrel M6, M8, M10) Rubbery Handle and ergonomic design makes install the nuts less fatigue and comfortable. Labor & Time Saving: tools-free Rivet Tools can change mandrel and nose pieces by hand.  Thicked and long arms can save the 50% efforts.