Otis #21 Rifle & Pistol Bronze Bore Brush 22 Caliber RIM Fire - In Reusable Tube
This brush is designed specifically for 22 Rim-Fire, Short Action, Limited Breech, 10-22, .204 Limited Breech firearms.  It is 1" in length and has a 5/40 thread size rather than the standard 8/32 thread.  These brushes have a Tufcor proprietary core wire that is corrosive resistant, has a tighter twist for better bristle retention, and can be used with all firearm cleaning chemicals. Otis premium bore brushes also have twice the fill as other brushes, the stem is cold welded to the core, and the brushes are filled to the end. Each brush has the specific caliber or gauge stamped on the stem so you will never clean your gun with the wrong brush.