Be In Your Mind 8pcs 30 x 16mm Bobbin Winder Sewing Part Home Sewing Machine Rubber Ring Old Sewing Machine Rubber Ring Thread Wrap Leather Ring Compatible with Singer 29-4 29K51

[Vintage Bobbin Winders] - Set of 8 black small rubber bobbin winders, designed for vintage sewing machines. [Compatibility Assurance] - Universally compatible with most sewing machine brands, Fits for 66, 99, 201, 15, 301, 401, 403, 404 and many different models, offering versatility and ease for a wide range of machines. [Optimal Size] - Inner ring measures 1.6cm, outer ring measures 3cm, providing a perfect fit for vintage machines; ensure compatibility by checking your machine's model. [Durable Rubber Construction] - Made from high-quality black rubber, ensuring longevity and reliability for extended usage. [Installation Tip] - Place the bobbin winders in boiling water for two minutes, then allow them to dry before attempting installation for optimal fitting., Manufacturer: Be In Your Mind