I'd say this is NOT for a FW or 301. It's more likely this will fit either a 99/128 or a full size one like 66 or 201. though I think from what I've read - the one of the full size fits the base that comes in the machines that fit in the blond case (like the 301's, but bigger) and NOT the base of a full size bentwood case.
Being that it's a 128 shown in the directions, I'd assume that is what it fit - I'd really, really like to get that setup for my Singer collection . . .
Last edited by Macybaby; 07-22-2015 at 11:30 AM.