Cleans 22 Rim-Fire, Short Action, Limited Breech, 10-22, .204 Limited Breech * 5-40 Thread Size and 1" in length rather than the standars 2" * Twice the fill * Precision thread with no weak undercut * 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