Whether you are replacing the lock set on your antique doors or just love the traditional look of a glass knob, this mortise Lock set is the perfect choice for fixing hardware on interior doors. Made with a matte black constructed trim and a glass knob, it has a beautiful traditional look with modern construction. It can be used for left or right-hand installations, and has a lock bolt that is key activated from both the inside and outside. When you are restoring antique doors or replacing or updating hardware on older interior doors in your home, this mortise keyed lock set with glass knob is the perfect choice. Fits doors with a 2-3/8 in. backset.