This charge was widely used throughout WW2.
The body was made of waxed cardboard and both ends were made of thin pressed steel.
Early charges were made of Olive Drab cardboard, but this was changes somewhere in the war.
One side had a hole to fit a fuze. The threaded nipples of all boobytrap fuzes would fit here.

Photos below © M. Jochoms, early model :

Photos below © Lex, second model :

The photo left and below show an original ww2 case filled with demolition blocks of the second model.
This is how the explosives were issued at the front.

Photos © Christian.