These plastic bobbins are used on most new Singer sewing machines. They are 15k class and suitable for front loading or top loading sewing machines.
Habico Sewing Machine Bobbins 3pk – Yorkshire Trading Company
Singer 15 K - UK
Singer 15k Parts - UK
Brother Innovis A Series Extension Table Fits Innovis A50, A60, A65, A80, A150 - UK
Singer Tradition (2250, 2259, 2263, 2273, 2282) Parts
PLASTIC BOBBINS / 15K or 66K / Clear PLASTIC SEWING MACHINE BOBBIN
Singer Tradition (2250, 2259, 2263, 2273, 2282) Parts & Attachments
Singer Confidence 7400 Series Genuine Singer Accessories
Singer Bobbin - UK