-Bobbin winder springs
-Fits Singer models 500a and 503a.
-Return spring part # 172552
-Release spring part # 172555
-These springs can be purchase individually or in a set.
-Bobbin winder springs
-Fits Singer models 500a and 503a.
-Return spring part # 172552
-Release spring part # 172555
-These springs can be purchase individually or in a set.