Szczotki do czysczenia broni
Most brushes in this category have internal thread 1/8'' (female). Brushes for shotguns have an external thread M5 x 0.8 (male).
Tipton and IOSSO brushes utilise external thread 8-32 (male). Shotgun brushes of these manufacturers have an external thread 5/16”-27 (male). Small-caliber .17 & .20 cal brushes use 5-40 thread.