Greenlee  1647 Professional Wire Ferrules Crimper, 1600 Series Professional-quality crimping tool for insulated and non-insulated wire ferrules with a range of 20-10 AWG (0.5-6.0 mm) Type 20-10 AWG (5-6.0 mm) stranded wire Crimp size 20-10 trapezoid Connector style DIN or US type wire ferrules Connector type insulated and non-insulated wire ferrules