If you have a bunch of .30 cal through .318 (8mm) cal weapons, this is DEFINITELY the cleaning kit for you. I was so impressed that I kept one for myself. Consisting of a series of attachable steel rods with brass fittings (so they don't damage the bore), these are amazing and a MUST-HAVE for any firearm owner/collector. Comes with some (stinky) grease the Swiss used to lubricate their STG 57 rifles. Contents may vary on that, but I'm planning on using this kit with good ol' Hoppes #9 and some patches. This cleaning rod has an actually solid handle and is fantastic for a military cleaning kit. I don't know what much else to say except these kits are AMAZING!