The ACDelco Cordless Li-Ion 20V Brushless Rivet Tool, No. ARV20104B, is fully automatic and the 20V battery platform is designed to make hundreds of rivets on a single charge. The patented Electronic Torque Control (ETC) system makes sure all the rivets conform to the same tension and create a uniform flange. The spent mandrel ejection mechanism releases mandrels automatically after the rivet is made. The ARV20104B features an ergonomic design and compact, durable housing. This cordless automatic riveting tool makes for easy and quick uniform rivets without having to manually use a pop rivet gun or deal with air hoses, according to the company.