This set includes four new rubber tire rings designed for specific sewing machine models. Each ring has a tire thickness of 6.6mm, an inside diameter of 18mm, and an outside diameter of 31.6mm. These rings are suitable for use with various sewing machines, including models such as 29-4, 29K51, 444, 158.17741, 385.16951, 385.1915369, 1245, 1477, 1523, and 1505. The package provides four rubber rings, ideal for replacing worn or damaged parts on bobbin winders and spindles. These rings are new and designed to ensure proper tension and smooth operation of the bobbin winding mechanism. Choose your desired quantity when ordering to meet your sewing machine maintenance needs. Each ring is crafted to fit precisely, helping to maintain optimal performance of your sewing machine's bobbin winder system.
