Size 15K Which Is 21mm Diameter x 11mm WidthIdeal For All Makes Of Domestic Sewing MachinesThe item is a set of 50pcs 21mm domestic sewing machine bobbins, which are made of durable clear hard plastic, and suitable for most domestic sewing machines including Singer, Brother, , Babylock, Euro-Pro, , , White, Juki, New Home, etc.Features50 pieces of the clear plastic sewing machine bobbins in one set will be sold together.Color: transparent.Material: durable hard plastic.Size: Diameter: about 21mm ;Height: about 11mm .100% brand new and high quality 2.1cm Clear Plastic Domestic Sewing Machine Bobbins.Fit for most domestic sewing machines, including Singer, Brother, Babylock, , Euro-Pro, , , White, Juki, New Home, Simplicity, Necchi and Elna, etc.Simple and practical design, and easy to use.Package Including50 * 2.1cm Clear Plastic Domestic Sewing Machine Bobbins for Brother /Singer / /Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.