Put a pop rivet into the nosepiece, slide the rivet shaft into a hole, squeeze the vinyl gripped handle and snap, you've set your rivet. Riveter includes interchangeable nosepieces for 3/32", 1/8", 5/32", and 3/16" rivets with a steel nosepiece insert for longer tool life. Use horizontally or vertically for easy installation of rivets. Replacement jaws are available (PN 14313).