Bobbins for the Junker & Ruh SD 28 leather stitching machine, double machine. The bobbins are used.
I have also needles for the Junker & Ruh SD 28 available. Please follow this link:
https://shop.shoemakercraft.com/products/junker-ruh-sd-28-needles-system-1551
If you have any questions, please ask.