The same material as the E85 Dynamic Brushes with the best life and least arcing on the market and MADE IN THE USA, however these are .074 tall and .123 OD, they are slightly larger however should not jam like some other brands in the brush hole.
They also have a line molded in, it matches the Wizz-Jet spring perfectly as shown in the picture.
There is no X in case you need to offset the line as some old aurora and other brands need to be offset.
