What you get: The package includes 4 pieces of sewing machine bobbin cases that can be replaced or shared as needed Application: The bobbin case is designed as a spare part for sewing machines with a front-loading spool system and can also be used as a replacement case Function: 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 Babylock, Bernina, Brother, Elna, Janome, Kenmore, Singer, and others Material: Made of stainless steel, durable and long-lasting Product applications: Suitable for use as a spare or replacement bobbin case in compatible sewing machines Specification: 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 Compatibility reference to brand names is for cross-reference purposes only and is not intended as an endorsement or affiliation