This Bore-Max Speed Brush pack includes 10 popular pistol and rifle calibers in one convenient storage case. Bore-Max Speed Brushes have twice the bristle density of standard brushes for maximum scrubbing power and faster results. Stiff, nickel-plated phosphor bronze bristles reduce chemical breakdown from solvents and extend the life of the brush. Includes 10 Brushes: Rifle: .22/.223/5.56mm, .243/6mm, .260/6.5mm, .270/.284/7mm, .30/7.62mm Handgun: .22, .380/9mm, .40, .45 Mfg: Real Avid