Well, to me they look like a cleaning rod with the end already attached? In the US Army we had rod shaped the same except it had a hole for the patch to go through. The german ones the patch just slides over the top. A cleaning kit from say hoppes has a small pistol rod that you attach a metal or plastic piece. It can be holllow for a patch or solid, and each is much smaller than the bore.
The WW2 kits were multi purpose and had a chain that you pulled the patch through the bore.
Ed
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