The single-hinge regular version is 9-3/4" overall; the long handles permit good leverage to cut fasteners up to 3mm (approx. 1/8") in diameter and hardened wire up to 2mm (approx. 5/64"). The 8-1/4" long high-leverage model has a dual hinge that uses the mechanical advantage of a compound lever to amplify applied force. It cuts fasteners up to 4.5mm (approx. 3/16") and hardened wire or chain links up to 3.5mm (approx. 9/64").