Tool Sets -Steel Hand Riveter Highlights Generic Brand Steel Hand Riveter Description: The chuck and nose are placed in a colored container labeled with metric and sae size are marked accordingly, the chuck and the nose are 1 piece nose are in a plastic box. It fits many standard nut auction machines, metric M3 M4 M5 M6 M8 M10 M12 and SAE standard 1/4-20, 10-24, 8-32, 6-32, 5/16-18, 3/8-16 100% brand new with high quality. Made of high strength steel. It is a permanent and reliable fixation. Specification: Material: Steel Size Chart: Size Approx: M3: 4cm/1.57inch M4: 4cm/1.57inch M5: 4.2cm/1.65inch M6: 4.2/1.65 inch M8: 5 cm/1.97 inch M10: 5.2 cm/2.05 inch M12: 5.3 cm/2.08 inch 6-32: 4 cm/1.57 inch 10-24: 4.1 cm/ 1.61 inch 1/4-20: 4.2 cm/1.65 inch 5/16-18: 4.3 cm/1.69 inch 3/8-16: 4.4 cm/1.73 inch 8-32: 5 cm/ 1.97 inch Package includes: 1 Piece Steel Riveter Nut Gun (2 Pack) Note: Please allow 1-3mm measurement deviation due to manual measurement. Due to the different monitor and light effect, the item's color may be slightly different from the color showed on the pictures. Thank you for your understanding and attention. I wish you a pleasant shopping experience!