Pack of 10 ALUMINUM Bobbins for Double Needle and Single Needle sewing Machines.
Fits walking foot machines such as Juki lu-2810a-7 and Atlas USA AT 1508-7
This is a light weight bobbin to ensure less wear and tear of your machine.
you should only use metal chrome, silver or black temporarily when aluminun is not available. Metal ones are a little heavier and it wears and tears faster your machine.