Description:Bobbin Case Sewing Machine Parts for Singer #Q6A0764000 3323 4411 4423 5511 5523Specification:Compatible Brand: For SingerModels: 2010 (Professional), 2010 Superb, 3321, 3323 Talent, 4411 Heavy Duty, 4423 (Heavy Duty), 44S,5523 Heavy Duty, 9100, ET-1 (Perfect Finish)Color: BlackSize:Width – 3.5cmLength – 4cmHeight – 1.3cmQuantity: 1pcFeatures:The bobbin case is the part of the sewing machine that the bobbin is inserted into, that holds the tension of the bobbin thread.Tension is adjustable via a screw on the side of the bobbin case.Be sure to use the bobbins that are specifically designed to work with this bobbin case, as other bobbins will cause skipped stitches and can cause bigger problems for your sewing machine.Package Included:1pc x Bobbin CaseNotice:1. Please allow a bit error due to manual measurement. please make sure you do not mind before you bid.2. The color may have different as the difference display, pls understand.More Details: