I was looking yesterday for a replacement for my small boat and noticed two things; Many ANCO 52 model blades are back ordered AND nobody caries the size I need which is a 10 inch
I am looking for a replacement insert or just the rubber. In the past I had to do get a longer refill, cut to size and reuse the metal 'frame' of the original blade holder ( not the arm)
There are listings on EBay for ridiculous prices for refills. Don' fall for that.
Just checked again, 52-16 is unavailable on Amazon. Also note that the 55-16 has a different mounting arrangement that is not compatible with your arm