In addition to cleaning firearms, this brush is useful for cleaning tubes, nozzles, paint spray guns, tattoo equipment, airbrushes, and so much more. .30 Caliber Cleaning Brush .30 Caliber Rifle-Fits: .22-250, 6BR, .270 Cal., 7mm-08, 7mm Mauser, .308, .30-06. (.30 Cal. ) • Phosphor Bronze • Brush Length: 3″ • Bristle Pitch: 8-32 • Aluminium Shaft