What you get: The package includes 4 bobbin cases, allowing you to replace or share them as needed Application: Bobbin case is compatible as a spare part for sewing machines with front loading spool system; can also 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 measures approximately 22.75mm in diameter, 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: The bobbin housing is designed for use as a spare part for sewing machines with front loading spool systems; suitable for use as a spare case Function: Bobbins stop turning more quickly, helping prevent thread from unwinding or tangling when sewing begins or ends Specifications: Material: Stainless steel Size: Approx. 22.75 mm 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