Our Breakthrough Clean Technologies Brass Jags are machined to specific calibers for precision fit. Each .270 / .284 caliber / 7mm brass jag is stamped with caliber #8/32 thread for attachment to Breakthrough Clean Technologies stainless steel rods. Standard #8-32 thread (standard shotgun #5/16-27 thread on 12g).Product FeaturesGUN CLEANING SUPPLIES: Our brass jag helps maintain your firearm so you can shoot with consistent accuracy at the gun range. This handy accessory removes excess powder, copper, debris, & solvent when accompanied by a patch.GUN CLEANING TOOL: This .270 /.284 / Cal / 7mm jag is fabricated from brass, is machined for precision fit & is stamped with the specific caliber. Thread size is a standard #8-32 & is designed to be used with any cleaning rods.GUN CLEANING JAG: Get the ultimate clean by completely covering the jag with your choice of cleaning patch. Our gun cleaning products make thoughtful & practical gift ideas for fellow gun owners who need utility & flexibility.GUN CLEANING ACCESSORIES: Pack our high-quality jag in your range bag, add it to your rifle cleaning supplies, or store it with your gun cleaning accessories, & solvents. Our brass jag is ideal for gun maintenance wherever you choose to use it.MADE IN THE USA.