The Dual Crimper incorporates two medium crimping cavities to fit all of the crimp tubes and beads within the medium range, each cavity is slightly larger (or smaller) than the other to give the user the ability to tighten the crimp properly. Great on Beadalon #1 and #2 Crimp Beads or #2 Crimp Tubes, as well as other non-standard crimp bead and tube sizes. New improved softer ergo handles make crimping more comfortable. 5 inches (12.7 cm)..