Cordless Rivet Gun.20000 Nm max pulling force. Compatible rivet diameter : ø 2.4 mm, ø 3.2 mm, ø 4.0 mm, ø 4.8 mm, ø 6.4 mm. Rivet holding mechanism; Once a rivet is installed, it is held in place and do not drop out even when the tool is directed downward. Cordless Rivet Gun