This kit is used to perform demolition projects by the East German Army Engineers.
Many items shown here are similar to those found in the US Engineer demolition set.

Components of kit:

1. Canvas carrying bag , 2. Small hammer , 3. Socket wrench , 4. Crimpers , 5. Insulating cutting pliers , 6. Screwdrivers , 7. Ruler , 8. Demolition knife , 9. Scissors , 10. Sealing compound , 11. Friction tape , 12. Cutting board , 13. Adapters.

Photos below © Allan.
It shows the demolition set that was used by the West-German Army, which is almost identical.