The Janome Bobbin Case is designed to fit the MB-4S and Elna EL940S embroidery machines, offering a perfect replacement or spare part for these models. This essential accessory ensures smooth and precise bobbin thread control during intricate embroidery projects. Crafted by Janome, a trusted brand in the sewing industry, this bobbin case guarantees compatibility and durability for long-term use. Keep your embroidery machine running efficiently with the Janome Embroidery Bobbin Case fits MB-4S, available in the 'Accessories & Notions' category. Get yours today and elevate your embroidery experience with this high-quality product from Janome.