Specification Brand : Sewphee BulletPoint1 : Sewphee Genuine Metal Bobbins provide Superior Durability for Long-Lasting Use: Made from premium galvanized cold-rolled steel. These sewing machine bobbins are resistant to wear and tear, outlasting plastic alternatives. Perfect for heavy-duty sewing projects. Perfect additions to your sewing accessories and supplies. BulletPoint2 : Consistent Thread Tension: The heavier construction of our sewing bobbins ensures more reliable tension control, producing smoother, uniform stitches at high speeds. Bobbin Diameter: 0.8 IN, Inner diameter: 0.25 IN, Outer Width: 0.45 IN, Inner Width: 0.39 IN. BulletPoint3 : Heat-Resistant and Warp-Free: Designed to resist the heat generated from prolonged high-speed sewing. Our Class 15 bobbins maintain their shape and deliver dependable performance over time. BulletPoint4 : Smoother Thread Release: The polished metal surface of our sewing machine bobbins allows even thread release, while reducing snags and interruptions to ensure seamless sewing results. BulletPoint5 : Made-In-Taiwan – Packaged in Canada: Our Most Advanced Universal Bobbins are the same size as bobbins for Brother sewing machine and Singer sewing machine accessories. Singer 4423 Heavy Duty, 4432, 4452 compatible along with other high quality machines – Item Number 2518A, 2518T. We STRONGLY RECOMMEND that you check your machine's manual to ensure compatibility. ExternallyAssignedProductIdentifier1 : 628634759295 ExternallyAssignedProductIdentifier2 : 0628634759295 GpsrSafetyAttestation : 1 ItemDisplayDimensions_Height : 0.46 inches ItemDisplayDimensions_Length : 3.96 inches ItemDisplayDimensions_Width : 3.52 inches ItemDisplayWeight : 39 grams ItemName : 2025 Upgraded Class 15 Metal Bobbins Compatible for Brother, Singer, Kenmore, Janome, Babylock Sewing Machines - Sewing Machine Accessories - 12 Pack Bobbin ItemPackageDimensions_Height : 9.906 centimeters ItemPackageDimensions_Length : 1.397 centimeters ItemPackageDimensions_Width : 9.0932 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : bobbins Manufacturer : Sewphee Material : Metal ModelNumber : 2518T-12PCS-USA NumberOfBoxes : 1 PartNumber : 2518T-12PCS-USA ProductDescription : Includes: 12PCS of Genuine Sewphee Class 15 Ultra-Premium Metal Bobbins – Item number 2518, 2518-A, 2518T. Please see below for sewing machine compatibility. ProductSiteLaunchDate : 2023-08-02T10:19:19.643Z Size : Pack of 12 UnspscCode : 52000000