Sewing Thread Combo,size A,L or M prewound bobbin&4 spools same color

Sewing Thread Combo, prewound bobbins plus 4 spools of same color top thread. Most soft and common 40S/2 Spun Polyester Thread, thread weight 34wt. 3 sizes most common bobbins on market Size L, Size A or Size M. Details of each size of bobbin check below to find out the correct bobbins suitable for your machine. If you do not know which size of bobbin you use, please check with us. Size L and Size A bobbin combo with 36 pcs prewound bobbin, Size M bobbin combo with 30 pcs prewound bobbin. All come together with 4 spools of 500 meters (550 yards) same color top thread. Prewound bobbins, S ize A, also called Style A, Class 15, Style 15J, SA156, Brother size 11.5  --  Diameter 2.06cm (13/16 inch), Height 1.15cm (29/64 inch) Prewound bobbins, Size L, also called Style L, SA155, Brother size 9.4  --  Diameter 2.13cm (27/32 inch), Height 0.89cm (23/64 inch) Prewound bobbins, Size M, also called Style M  --  Diameter 2.60cm (1-1/64 inch), Height 1.10cm (7/16 inch)