Not sure what Pfaff you have as I have 2 both 1171 and 7550 and both have IDT foot I knew a Pfaff dealer in the mid 90's saying they were coming out with a Pfaff without a walking foot and she refused to carry it because she said without the IDT foot it was not a Pfaff so maybe you can google or check with a dealer I do know if it is not a snap on foot it will not work on my machines so I say contact a dealer Good Luck