Superior Automatic Self-Adjusting Ferrule Crimping Tool with Front Feed (PEW 8.88) for 28 - 5 AWG - The Original Rennsteig Square crimp profile with four serrated crimp surfaces Pre-selection of the 2 crimping sizes by a change-over switch Self-Adjusting Crimping Pliers for end sleeves (ferrules) The original german build tool - patented by Rennsteig Lever system with releasable locking mechanism for crimp connections conforming to DIN/EN standard