I got a generic one from ebay and just tried it today, and it works! There were 2 sizes and I measured on the feed which size I needed. Apart from that, it seems that a generic one would usually be ok, and much cheaper! I'm loving using it although I did confirm what I had read but forgotten, that you can't reverse with a walking foot! I'm using it to sew with PUL for diaper covers. On the regular foot the needle thread kept coming out, but with this it's fine. I watched a good video clip which mentioned about before attaching the walker foot you have to remove the shank that's already on the machine. If I hadn't seen that tip, I would never have known.