Fits all singer class 66 models and some of the following machines:baby lock, brother, and simplicity * bobbins not compatibles with the following machines bernina, elna, Husqvarna/viking, janome/new home and pfaff * Use only the same t;ype (metal or plastic) of bobbin that came with your machine. * All products are charged with a high shipping rate due to constant increases in our shipping cost, if you are overcharged you will be refunded the difrence when your product is shipped