With the rocket wrench, the fuse of the unexploded heavy ammunition or bomb can be removed without detonating the target.
The rocket wrench is fixed to a conic or cylindrical fuse. The cartridges are screwed to the cartridge chambers and connected directly or with a firing pin to the firing device. Powder gases give the rocket wrench a rotational movement, which releases the fuse. After the bomb clearing the rocket wrench can be reused or packed in the transport case for future use.