This Polish RG-42 is an exact copy of the post-war Russian RG-42.
Poland used both Russian grenades as well as RG-42's that were made in Poland.

Length body : 85mm
Diameter : 55mm
Weight w/fuze : 420gram
Filling : 110gram

Photos © Cory.

Fuze container.

The photo on the right shows a sealed container for 10 fuzes.
The left container is for practice fuzes for the CRG-42, the right container holds 10 fuzes for RG-42 or F1 grenades.

Photo © Greg.