Hydraulic Crimping plier 4-70mmConvenient to operate: C style head makes side entry easy to access and operate; on off knob for easy crimping and arm retraction; tool free die change; 8" long non slip handles for easy and secure crimping operations Powerful and effortless crimping: maximum crimping power of 10 tons offers a good squeeze to prevent loose crimp and arcing 8 pairs of hexagon crimping dies included: 4, 6, 10, 16, 25, 35, 50, 70 mm; crimps AWG 12 to 2 0 size aluminum