Fully prepared and ready to install for a lighter feeling, clean breaking trigger pull. All models feature fully-cut hooks and pre-ground engagement surfaces that don’t require additional work. 201 Pro – Wire EDM’d then machined from tool steel to provide long life for competition use. Lightweight, cutaway design loop. Mfg: Nowlin SPECS: 201 Pro – S7 tool steel, matte finish. All hammers Rc 50-53.