The IOSSO .357/9mm Bore Brush with Guide Rod Handle (19221) are made with a fiber that is cobalt blue which is a stiffer grade of fiber that allows for back and forth action unlike traditional brass and bronze type brushes. The guide rod handle is made from a sturdy polymer and when assembled it has an overall length of 13". The fiber last approximately 8 to 10 times longer than other brushes. The brush is wound tighter and has more fiber per inch than any other brush.
13" Overall Length w/ Brush