Bomba Ru?na Speciajalne

Total length : 110mm
Diameter : 57mm
Weight : 175gram
Filling : 50gram BZ + 4gram Pentolite.
Fuze delay : 3,5 - 4,5 seconds
Detonating fuze !

BZ stands for Benzilate. Need info on that.
I believe this is very freaky stuff, in a negative way I mean.