The No 4207 Georgian-style faux bit key thumbturn can be used with all Nanz full mortise locksets. The oval backplate is circumscribed by a quarter round that is flanked by two steps. The piece features the rough hewn Nanzcraft finish. The turnpiece measures 1-1/8″ x 3/16″ in diameter and has the projection of 2″. All Nanz plated and patinated finishes are available.