10 pack of class 15 Metal Bobbins made in Taiwan not China. 

This Listing is for a Brand New SET of METAL Bobbins that fit SINGER KENMORE WHITE Style Home Sewing Machines.

These Bobbins are 20mm diameter and 10mm thick. This bobbin is used on most home sewing machines with oscillating sewing hook (shuttle hook).

(3/4" in Diameter and a bit over 3/8" Thick). There is a notch in the center for the re-winder. These Bobbins will fit: