Features and Benefits:�Hold inserted rivets in any orientation�Laser etched size markings�Color coordinated size markings�Pull 3/32 in., 1/8 in., 5/32 in., 3/16 in. rivets�Rubber o-ring holds rivets in any orientationThe M12 rivet tool mandrel retention nose pieces 4 pk allows rivets inserted to stay in the tool at any orientation. Each nose piece is laser etched with its diameter in English units as well as metric. Each nose piece is also color coordinated to allow quick identification when being exchanged. Compatible with the 2550 M12 rivet tool.