A lot of three Apple MacBooks. According to every mac.com, these are two 2013 and one 2015 models but I cant confirm this beyond looking them up. These are all EFI locked. Therefore, I cannot check the functionality of any of the components as you can see there are two keys missing. However, I cannot confirm any thing that is working on these machines. These could still be locked or they might not work at all. You should be buying these for parts only as I cannot guarantee that they will work, even if you are unable to unlock them. These do not come right back screws, SSDs, or batteries. See photos for details.