The Mighty Crimper was developed for larger beads of 3mm diameter, and is exceptionally handy for closing crimp ends, eyelet ends, cap end, pinch clasps and crimp covers. Because of the rounded jaws, it will leave no marks or flat spots. Because of its larger size, the Mighty Crimper is made of slightly thicker steel, giving it 2.2mm wide jaws which are precision milled. Length: 5-1/4" (135mm).