Bobbins - Metal 10 Pack Class 15

Bobbins - metal Class 15, with holes on both sides. These, Bobbins - metal Class 15 fit most oscillating hook home sewing machines whether older front load oscillating shuttle or newer top drop. Bobbins - metal Class 15 should only be used in front load metal bobbin cases as it may cause undue wear on top load plastic bobbin cases.