This replacement adaptor can be used on the following winders:
31-409, 31-410, 31-411, 31-414, 31-415, 31-416, 31-417, 31-418, 31-419, 31-420, 31-421, 21-423, 31-424, 31-425, 31-426, 31-427, 31-428, 31-439, 34-501, 34-502, 34-503, 34-504
PARTS, INCLUDING ADAPTORS, ARE NOT RETURNABLE.