Bobbin Winder Spring, Janome #730019006
Guaranteed to fit Janome sewing machine models:
104, 108, 110, 352, 380, 381, 4612 Travel Mate, 808, 808A, HD-1000, L-108, L-352, L-372, L-373, L-392, L-393, L344 (344), RX18, RX22, S-950, S650, TB-12 Thread Banger
Guaranteed to fit Necchi sewing machine models:
HD22