13 bronze bore rifle brushes from 17 to 45 caliber (17; 20; 22; 243/6mm; 25/6.5mm; 270/7mm; 30/32; 338/8mm; 35/9mm; 375; 40/416; 44 and 45). 8-32 threaded. Storage case with marked cavities, hinged clear lid, and screw holes that allow box to be mounted on a wall. Metal threads and wire for solvent resistance. Phosphor bronze bristles. All components are non-marring. Clam packed.