Specification Brand : ThreaDelight BulletPoint1 : Prewound Embroidery Bobbins BulletPoint2 : 100% FilimentPpolyester BulletPoint3 : White BulletPoint4 : 60 WT BulletPoint5 : 125 yards per bobbin Color : White ExternallyAssignedProductIdentifier1 : 0718245099603 ExternallyAssignedProductIdentifier2 : 718245099603 ItemName : 144 Prewound Bobbins - White "L" Size Cardboard Sided ItemPackageDimensions_Height : 2 inches ItemPackageDimensions_Length : 8 inches ItemPackageDimensions_Width : 6 inches ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : bobbins Manufacturer : ThreaDelight Material : Plastic ModelNumber : 137322-001 NumberOfItems : 144 PartNumber : 40264 ProductDescription : White prewound bobbins, cardboard sided, with plastic core.125 yards of premium quality poly filament thread on each bobbin.L size - universal for most embroidery machines.Good prewound bobbins are wound by high tech machines which provide a smooth, uniform wind. The result is much more thread on the bobbin than a self-wound bobbin.Difference between plastic sided and cardboard sided bobbins: Plastic bobbins are reusable; cardboard bobbins are disposable. Some machines, especially Pfaff (2124, 2170, 2140), work better with the cardboard-sided bobbins. Cardboard sides provide more friction and backlash is usually not an issue. If it is, the bobbin tension may need to be tightened. ProductSiteLaunchDate : 2010-08-08T00:00:00.000Z TargetAudienceKeyword : People UnitCount : 1 UnspscCode : 60120000