Needed a good tool to remove the battery screws.
The tools that shipped with my amazon battery replacement were not good. They started to strip the screws. After several tries I stopped. However, I remembered that I ordered a memory upgrade kit with a great Mac tool from iFixit several years ago. That was for the outside screws. I use that tool for a lot of things! So I decided to order a triY1 battery screw driver.
Excellent. Worked to remove an Apple factory screw (had loctite-they did not want you to remove) first try. My MacBook now has a new battery. Glad I remembered and googled iFixit!
Always use a good tool from iFixit!