The "SPECIAL LINE"™ BRASS CORE BORE BRUSH by BROWNELLS is designed for 20 Gauge shotguns, featuring a one-piece brass shank and no-scratch brass coupling for safe barrel cleaning.
It utilizes high-quality phosphor bronze bristles for effective cleaning and longevity.
The brush has an overall length of 2-7/8" (7.3cm) with 5/16-27 thread, specifically made to avoid scratching the barrel during the cleaning process.