I had to replace two passage sets - one on the master bedroom door and one on the master onsuite.
I was looking for a quality polished brass passage set that would fit the existing 54mm hole and recess for the latch and striker plate. I wanted concealed fixings as I am not a fan of screw heads spoiling the look of my door hardware.
I originally bought something from Bunnings but I was not entirely happy.
I found two of the Gainsborough sets on eBay and bought them. They fitted my doors exactly and look fantastic. While not an expert on door hardware the quality of these seems very good. They work perfectly and the door opens and closes like a dream.
I took back the sets that I had bought from Bunnings as these Gainsborough sets were far superior.