Description: Singer/Bernina Rotary (Steel) Sewing Machine Bobbins (20 pcs) Guaranteed to fit Alphasew Sewing Machine Models: 221 Featherweight. Guaranteed to fit Bernina Sewing Machine Models: 217 & 540. Guaranteed to fit New Home Sewing Machine Models: NLB Guaranteed to fit Singer Sewing Machine Models: 221 Featherweight, 221-1, 222 & 301. Alternative Part Numbers Include A1225