This HC smoke grenade was fitted with a 2.5seconds fuze, without detonator.
When used, smoke was emitted for 2minutes.
Grenades could be fitted to eachother and so make a larger smokescreen.

Length w/fuze : 190mm
Length w/o fuze : 136mm
Diameter : 60mm
Weight : 500gram
Filling : 275gram HC smoke mixture
Fuzes :
BA-35 (2.5sec), BA F8 or BA F10.

One without a threaded base connector :