I'm not sure what the differences are for the slant shank "special purpose" feet, but there are two listed for slant shank. The numbers for slant shank are 161167 & 163483. The numbers 161612 & 161455 are both for short shank machines. I've checked several sources and get a variety of conflicting info. The 161612 came with the 306 that I got recently, but the parts list from singerco.com site says that 161455 was what came in attachment set 160977 for the 306. I would think either would work. Personally, I would think that the one with more metal (the one coming off 90 degrees behind the foot would be the better one if one uses it a lot. I have seen where the pieces of the foot have broken apart.
Janey - Neat people never make the exciting discoveries I do.
Last edited by OurWorkbench; 08-12-2015 at 03:51 AM.