Enjoy the flexibility to switch between different thread and colors seamlessly with a set of SINGER Class 15 Transparent Plastic Bobbins. These replacement plastic bobbins are a must-have addition to your sewing supplies, perfect for both novice and expert sewers. Class 15 bobbins are flat on the top and bottom and are commonly used in home sewing machines for various sewing projects, from simple repairs to complex garment construction. Compatible with select SINGER machines that use a plastic class 15 bobbin, Atlas, Brother, Domestic (rotary), Elna, Kenmore (rotary), Morse, Necchi, New Home (rotary/old style), Pfaff, Sewmore, Universal, White (rotary) and Wizard machines, these bobbins offer great versatility. Please consult your machines manual to determine compatibility.