Typically used on mortise locks. Each spring loaded spindle is 9/32" square. Set is thru bolted and includes screws for both 1-3/8" and 1-3/4" doors. Replaces MarksUSA #K9220. Replacement For Marks 22AC Knobs. Knob and rose are pre-assembled.

Packed one pair per box.

Available finishes: US3 , US26D