It is a non-branded replacement compatible with selected Husqvarna Viking
Tiptronic 2030
also sold as 4163975-01
and is not intended for a top-loading or drop-in hook system
Janome-Compatible Class 15 Metal Bobbin Case | HD-1000, 2212 & More Groups 7–9 It is a non-branded replacementReplace a missing or worn bobbin case on compatible front or side loading Janome sewing machines. This all metal Class 15 case holds the bobbin and provides the lower thread tension needed for balanced stitch formation. Compatible Janome examples include 1522BL, 1522RD, 1522PG, HD 1000, HD 1000 Black Edition, 2212, 2206, 3128, Arctic Crystal, and 234. The same case pattern is also used by compatible Kenmore, Brother, Singer, Elna, Pfaff, Baby Lock,