This satin brass thumbturn lock assembly is typically used in a bathroom application for privacy. Integral to this design is an outer egress slot for emergency purposes. The roses each side of the door are a threaded two-part design to aid installation. Designed to accommodate a standard size bathroom sashlock with 57mm lever to thumbturn size. The satin brass thumbturn is operated by a 5mm spindle provided. Sleeve bolts for hollow doors and self tapping screws are provided with the 5mm spindle. Matches the satin brass Z746-Z750 range of lever door handles.