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Prewound Bobbin 144pcs, mostly as embroidery bobbin, as sewing bobbin also. Size L, also called Style L, SA155, Size 9.4. Card Board, White Color Thread Filament Polyester 75D/2, thread weight 60wt, Tex 17, Denier 150 There are more than 20 different sizes of bobbin, but A, L and M these 3 sizes are covered more than 85% machines on market. Please check the suitable machine models list photos which we update yearly with new models add on or the bobbin measure size below to find the correct bobbin. If you are still not sure, please feel free to check with us before purchase. Size A, also called Style A, SA 156, Class 15, Style 15, Size 11.5 Diameter 13/16"(2.06cm), Height 29/64"(1.15cm) Size L, also called Style L, SA 155, Size 9.4 Diameter 27/32"(2.13cm), Height 23/64"(0.89cm) Size M, also called Style M Diameter 1-1/64"(2.60cm), Height 7/16"(1.10cm) 3 different bobbin types. Plastic Sided (P), Card Board (C) and Side Less (X) Plastic Sided like a regular aluminum or steel bobbins just made by plastic. It is most common and stable bobbin, can be used on all type of machines without issue. So it is customers' first choose. Card Board bobbin with a plastic core but two sides walls use paper to reduce cost. It may load more thread than Plastic Sided bobbin, but paper can not give enough support than plastic. So NOT suggest to use on machines with top load bobbin or with a strong bobbin picker Side less without a core and also no walls two sides, so it is cheapest. Many problems while using, we stopped selling it in the USA and Europe, only at some markets looking for cheap only. We offer White (W) color thread, Black (B) color thread and colored thread with 3 digits color number. Spun Polyester looks like cotton, soft and strong, it's customers' first choose. Brother new models and other brand machines which without bobbin tension adjustment, can use Spun Polyester as bobbin thread only. 60S/2 (60S2) thread weight 50WT is Brother recommend #90 thread, normal as embroidery bobbin but can be used as sewing bobbin also. 40S/2 (40S2) thread weight 34WT, thicker, normal as sewing bobbin, and thicker thread embroidery bobbin. Filament Polyester looks like silk, fine thread so with more yards on bobbin but thread with glue. Not good on Brother new models with bobbin thread shows on top of fabric. Normally as embroidery bobbin only. 75D/2 (75D2) thread weight 60WT 70D/2 (70D2) thread weight 60WT, high tenacity like Spun 60S/2. DTY Filament Polyester looks like normal Filament. Thread with elasticity, not good as bobbin but cheap. For some markets for cheap only.







