Pure Support Calf Compression Sleeve The World' s Fastest Gun Bore Cleaner ; Cleans gun bores in 10 seconds ; 50% more brush cleaning power than the original boresnake Designated lubrication zone on the handle; brass weight on the pull cord is stamped with size Built-in bore brushes, brushes and swabs bore in one quick pass Multiple short brushes embedded in the floss pass easily through the shortest action or port