Type 41 was first issued as a normal smokegrenade with an adapter instead of a wooden stick as shown in the drawing below.
The 2nd type in the picture was a different design body that would accept the igniter without this adapter. A stick was no longer possible on this grenade. It had only two smoke emitting holes.

Length: 75mm/105mm
Diameter : 60mm
Weight: 530-550gram
Filling : 440gr HC-zinc 47/53.
Fuze :
BZ 39 or 40 or ZündschnurAnzünder39 , all combined with igniter tube N4.
24 grenades packed in a wooden case together with the N4 igniters.

Photos J-Mi.