Household sewing machine universal bobbin core, bottom line core, shuttle, equipped with a few more can be around different bottom lines, easy to use

model: A- 108

specification: height 1cm outer diameter 2cm inner diameter 0.6cm

the product size, weight, and other data are measured manually for reference only. It is normal that there is an error of about ± 1cm.

Material: Alloy

there are two kinds of grinding tools for metal bobbin core, which are divided into grooved and non-grooved ones. The grooved ones are shown in the following figure, with a small notch in the middle for some old sewing machines,. The one without slot is that there is no small notch. By default, the goods we deliver are slotless, and the slotless ones are universal on the mini sewing machines we sell,. If you want to use it for other models, you must have a slot, please leave a comment or communicate with customer service.