Made from heat-treated select steel well crafted guaranteed never to break or wear out from normal use. Smooth polished elliptical expander provides smooth release from case neck eliminates or reduces neck stretch. Sliding alignment sleeve. Spindle lock design. Hardened steel decap pin won't break bend or crack. All-steel seater adjustment screw. Compression washer provides slight amount of tension to make fine adjustments easier holds setting once in place. Built-in crimper. Retainer ring. Wrench flats on Sure-Loc rings makes fine adjustments easy eliminates damage to rings.