What size bobbin is used for Kenmore 385 16524000?

It depends on the model of the machine. If the bobbin is a top loading drop in bobbin, it's probably a class 66 bobbin. If the bobbin case is down below on the front of the machine, and you take it out to remove the bobbin, it's usually a class 15 bobbin. If you have your manual, it should tell you what bobbin you need. If you don't have your manual, go to managemylife.com, enter your model number. and you should be able to download your manual. On the newer kenmores, the model number is on a plate on the back of the machine, and will start with 385. and continue on. You need to enter the complete number.

Bekhat