These bobbin winder rubber rings are an essential part of any sewing machine maintenance kit. Regular replacement of the rubber rings helps prevent thread winding issues and ensures consistent tension. To replace, gently remove the old ring and fit the new one in its place. These rings are designed to withstand the rigors of frequent use, making them ideal for both hobbyists and professional sewers. Features -Color:Yellow -Material:Rubber -Size:3.80X3.80X0.80cm/1.49X1.49X0.31in - : these rubber bobbin winder rings are designed to be compatible with a variety of sewing machines, ensuring they can be used with different models -Sufficient supply: the set provides an ample supply of bobbin winder rings, ensuring you have enough for longterm use and multiple projects -Easy application: the design allows for quick and easy installation, making bobbin winding and less timeconsuming -Durable rubber: crafted from rubber, these rings are resistant to deformation, ensuring they remain effective and reliable over time -Improved sewing efficiency: these bobbin winder rings help the bobbin winding process, allowing you to focus more on your sewing projects and maintenance Package list: 10 x Bobbin Ring