Cardboard body with pull tapes on each side.
The base of the tube has a black cover which holds the matchbox striker.
The top is coloured red with a small dome in the middle. Pulling the cloth tapes on this end exposes the match head.

I don't know how many colours exist in this type.

Length: 145mm
Diameter: 55,5mm
Weight: 700gram
Smoke emission: 50seconds

See this small internet film on the use of the RDG-2 serie.

This smoke grenade was also used in the East-German and Czech army.