Numerous models of slim aluminum keyboards (e.g. ST-ACBKM, ST-AMWK, ST-AMWKM, ST-BTSX2M, ST-BTSX1M, ST-AMWKS (etc).)
Removing and replacing keys
Satechi Aluminum Keyboard Disassembly
These are some common tools used to work on this device. You might not need every tool for every procedure.
Tweezers
Phillips #00 Screwdriver
iFixit Opening Picks (Set of 6)
Heat Gun