What you get: The package includes 4 bobbin cases, allowing you to replace or share them as needed Application: This bobbin case is designed as a spare part for sewing machines with a front-loading spool system and can be used as a replacement case Function: Helps bobbins stop spinning faster, effectively preventing the bobbin thread from unwinding during sewing starts and stops Size: Each bobbin case has a diameter of approximately 22.75mm and is compatible with most sewing machines, including models from Babylock, Bernina, Brother, Elna, Janome, Kenmore, and Singer Material: Made of stainless steel for durability and long-term use Product Applications: This bobbin housing is commonly used as a spare part for sewing machines with a front-loading spool system and is suitable for use as a replacement case Function: The bobbins can stop rotating more quickly, helping to prevent thread from unwinding or tangling when sewing operations pause or resume Specifications: Material: Stainless steel Size: Approx. 22.75mm diameter Color: Silver Quantity: 4 pieces Package includes: 4 x Bobbin cases Note: Please verify your sewing machine model before purchase The brand names mentioned are for compatibility purposes only and are not intended as trademarks