RB-TB key

The  (RB-TB) is a Key in Escape from Tarkov.

Description
Military base key

Key Location

 * Pockets and bags of Scavs

Lock Location
The locked door is located in the the basement of the far-west multi-floor building. When you enter, go through the gym to find a caged door which will be unlocked by this key - it can be seen in this clip on Twitch.