Caliber or gauge is stamped into the brass weight. -Brushes an swabs bore in one quick pass -Built-in bore brushes -Multiple short brushes embedded in the floss pass easily through the shortest action or port -Initial floss area (inside the barrel) removes loose grit and debris prior to the scrubbing action of the brush -Main floss, with 160 times more floss than a patch, super cleans the bore -Brass weighted drop -through cord slips easily down barrel; No assembly required -Grasp and pull the cleaning cord through the barrel. -One pull through does it all. -Lightweight and compact -No exposed metal to damage sensitive rifling or crown Solvent compatible How to use it? Drop brass weighted cord through the bore. Pull slowly,being careful not to snag on edges or gun parts. Repeat as needed until gun bore is clean. The Bore Snake can be washed easily by Hands. Band seurely or use a was bag for machine cleaning. Air dry. Package Includes: 1 x Hunting Rifle Barrel Cleaning Rope Bore Snake