You will find that the brushes produced by OTIS will give you many times the life of most brushes. Each 2 pack contains one bronze and one nylon bore brush. The caliber-specific brushes are color-coded and have the size indicated on the stem, ensuring you grab the right brush every time. Otis brushes have a proprietary Tufcor core wire that is corrosive-resistant and has a tighter twist for better bristle retention and brush life - plus twice the fill of other brushes with bristles right to the end. With Otis brushes you get superior quality and precision cleaning

Specifications and Features:
Otis .30 Cal Bore Brush FG-762-NB
2 pack one Nylon one Bronze
8-32mm thread size
2" brush length
Superior construction
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
Twice the fill of other brushes and bristles right to the end, you get superior quality and precision cleaning every time.
Fits:
.30 Caliber/7.62mm and Similar