1. Manual operation: punch the hole, assemble the pull nut, tighten the rivet nut, fix it with a spanner, put it into the punched hole, and pull the rivet with hexagonal spanner (note: don't use too much strength, the pull rod is a fragile part). 2. Electric operation: punch the hole, assemble the mother head, tighten the rivet nut, fix it with a spanner, put it into the punched hole, and pull the rivet with the electric drill (Note: the electric drill needs to be adjusted to slow down the use of the electric drill). name:Hand Rivet Nut tool Riveter Gun Type:Rivet Nut Guns Power Type:Hand Riveters Colour:Black Material:Carbon Steel Package Contents: 1set x Hand Rivet Nut tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.