Adapter is for reversible cordless drills and greatly speeds up the installation of 'blind' rivets commonly used when building race car bodies. Tool is a real hand and time saver compared to hand operated rivet guns and is designed for use with all rivets up to 3/16' including 3/16' aluminum mandrel rivets but not recommended for 3/16' steel mandrel rivets. Adapter includes nosepieces for installing 3/32', 1/8', 5/32' and 3/16' rivets.