Can someone identify these components?

#1
I need to repair a connection that pulled apart on my gMax2 that was responsible for heater failure. What is the industry name for the terminal connection below? Additionally, what is the name of the red sheath and what is the name of the tool I need to crimp the connection? Also, how do I disassemble the cable track so I can get enough cable to work with?
20210228_131044[1].jpg
 

Attachments