Hemline Standard plastic bobbins. Fits most makes and models of front loading machines. 

Suits- Bernette, Celestial, Empisal, Frister & Rossman, Janome/New Home, Singer and many other machines which have the standard front loading bobbin case. 

Plastic bobbins can replace metal bobbins orginally supplied with machine. 

Important: 
Always check bobbins are the same size as the original before using. (11.5mm).