Description: Easy to Operate, just drill a hole in the workpiece, assemble the appropriate rivet nut onto the tool, insert it into hole, squeeze and then complete. Especially perfect when the surface in question is too thin to be tapped, or access to the backside is limited. Complete Kit for More Convenient Use, 5pcs high quality Threaded Mandrels with nosepieces: M3/M4/M5/M6/M8, totally 170pcs Ribbed Rivet Nuts, M3(24pcs), M4(25pcs), M5(25pcs), M6(16pcs), M8(14pcs), M3 washers(60pcs) to Meet Your Various Needs. Labor Saving Design: Tool with Mandrel Knob to easily separate the rivet nut from Riveter after it has been fixed; The Tool Stop Lever limits the opening of handles after the nut has expanded to prevent the thread of the nut from deformation. Comes with a Wrench to hold handles and Adjust Mandrels. All tool and accessories are packed in a Plastic Case with dual clip locks and anti-slip carrying handle for good storage and easy portable use! Specifications: Color: Blue + Black Material: Steel + Rubber Size: M3 / M4 / M5 / M6 / M8 Type: Rivet Gun Features: Ergonomic Tool Package Include: 1x Nut Rivet Gun (Including Wrench) 5x nut rivet mandrel: M3 / M4 / M5 / M6 / M8 40x M3 threaded rivet nuts 24x M4 threaded rivet nuts 20x M5 threaded rivet nuts 10x M6 threaded rivet nuts 10x M8 threaded rivet nuts 60x M3 washers 1 x plastic storage box Kelvenix 170pc Threaded Nut Riveter Gun M3-M8 Insert Tool Rivnut in Black