Otis No.17 Brush (17 HMR, 177 Caliber, 4.6mm);

Otis Technology 5-40 Thread Bore Brushes are smaller versions of Otis popular high powered bore brushes. Unlike the 2 inches bore brushes, these 1 inch cleaning tools come equipped with 5-40 threads so they're able to be mounted on less common varieties of cleaning rod. However, they share the same reputation for durability and effectiveness that all Otis Technology cleaning kits share. These bore brushes retain bristles better because of their tight twist, and the Tufcor proprietary core wire is strong and corrosion resistant. There is no weak undercut to the precision thread on the Otis Tech Rifle and Pistol Bore Brushes, and the brushes have twice the fill as competitor's bore brushes. Otis Technology has cold-welded the stem to the core of these high-powered bore brushes for added strength.