.  The Hemline Double Sided Bobbin Box with 50 Colored Bobbins is such a great idea as you will get 10 each of red, orange, green, blue, and purple bobbins.  You can use this color coordinating system to match thread types or your favorite type of sewing.  The Hemline Double Sided Bobbin Box with 50 Colored Bobbins includes 50 bobbins for class 15 A style bobbins.  

The Hemline Double Sided Bobbin Box with 50 Colored Bobbins is compatible with most brands of sewing machines that are top loading or front loading.  The Hemline Double Sided Bobbin Box with 50 Colored Bobbins contains bobbins that are Class 15 Size A.  

The Hemline Double Sided Bobbin Box with 50 Colored Bobbins works with most of these brands that are top loading or front loading in the previous mentioned size:

• Brother - Models starting with NS, XM, XV, PC, CE, CS, SE, ST, NQ, VM.SB, PE, SE, XS, SC, HC, XR, NQ, LX, SQ, GX
• Bernette--All Bernette Models
• Baby Lock - All models using A style bobbin. 
• Eversewn - All Models with top drop in and front loading bobbin system
• Janome - All Models with top drop in and front loading bobbin system
• New Home - All Models with top drop in and front loading bobbin system
• Singer Check your owners manual to make sure 15 Class A is called for
• Juki - All Models with top drop in and front loading bobbin system
• White - All Models with top drop in and front loading bobbin system
• Simplicity - All Models with top drop in and front loading bobbin system
• Riccar - All Models with top drop in and front loading bobbin system
• Necchi - All Models with top drop in and front loading bobbin system
• Elna - All Models with top drop in and front loading bobbin system