This .270 cal Otis Technology bore brush feature phosphor bronze bristles and a brass stem that work together to offer an effective clean without damaging your barrel. Each brush is stamped with the brush size on the stem to allow for easy identification. Otis brushes are outfitted with standard 8-32 threads.Cleans: .260cal, .270cal, .280cal, .284cal, 6.8mm, 7mmLength: 2 InchThread: 8-32Includes: 1 Bronze Bore BrushMade in the USA