Anybody for sure what the sizes of the nuts (#21 and #22) are in this photo? The fische identifies them as 16mm and 18mm special nuts but they are larger than 16 or 18. I put a 13/16 on the centrifugal clutch nut and it was too small. Maybe the 18 is a 22mm and the 16 is a 20mm? I have plenty of sockets but not many deep well ones…
