This set of 25 blue bobbins fits all Janome and Elna machines. The bobbins are coded with the letter "J", and are made of a special rubber and plastic combination which allows them to better hold threads, absorb machine vibration and reduce noise.
• Organize your bobbin thread collection
• Separate your specialty threads using the blue bobbins, keep regular thread in clear bobbins
• (25) Blue Bobbins