For residential single and multi-family doors. Unlocked or locked by keyed lever outside or turnbutton lever inside, inside lever always unlocked. Zinc based and plated, solid lever designing. Pressure cast zinc tubular lock housing. Key removable outsidelever for easy cylinder replacement. 3 piece assembly. All locksets have the same finish for both interior and exterior parts except the Bright Brass finish which has bright brass finish on all interior parts and ultima lifetime anti-tarnish finish on all lip.