The Otis brush set is engineered for enthusiasts who demand superior cleaning tools. Featuring a proprietary Tufcor core wire, these brushes offer unparalleled corrosion resistance, ensuring they stand the test of time. The tighter twist design enhances bristle retention, extending the overall life of the brushes, making them a reliable addition to your firearm maintenance kit. Perfectly suited for cleaning 6.8mm, .270 cal, and 7mm firearms, each brush measures 2 inches in length, fitting 8-32 threads seamlessly. This versatile set includes one nylon brush for gentle cleaning and one bronze brush for tougher residues, delivering a comprehensive cleaning solution to maintain your firearm's optimal performance. Invest in the Otis brush set for a dependable cleaning experience every time.