Tinksky 20pcs 20mm Diameter Domestic Sewing Machine Metal Bobbins for Brother Singer Toyota Janome (Silver) 20 pieces of the metal bobbins in one set will be sold together. Color: mainly silver. Material: durable hard metal. Each bobbin: 20mm (diameter), 10mm (thickness). With a notch in the center for the re-winder. Suitable for most domestic sewing machines, including Singer, Brother, Babylock, Toyota, Euro-Pro, Janome, Kenmore, White, Juki, New Home, Simplicity, Necchi and Elna, etc.