The superior blade design of this lopper "pulls" material into the cutting zone, dramatically reducing the force required to cut. They feature lightweight, high-strength elliptical 36" aluminum handles. The resharpenable, replaceable, Dual Arc, blades are made of fully heat treated forged steel. Forged slant-ground hook with self-cleaning deep sap groove. New and improved locking nut eliminates nut-retaining clip.