As shown in the photo, this is a 4 pack of brass bristle rifle bore cleaning brushes for the 8 MM caliber rifles.   They have a brass shaft and have the standard 8-32 threads so they will work on most commercial cleaning rods.  They will not work on military rods as those rods have a different thread size.    They are slightly oversize for a tight fit. 

Shipped free to US addresses only.

These are US made - not an import.