Cotton fibers really soak up cleaning solvents and oil. The natural scrubbing action of cotton helps remove loosened powder fouling. Great for applying Brownells Moly Bore Paste orJ-B(R) Compound. Mfg: Brownells SPECS: Cotton. .17 & .20 cal. – Brass shank and coupling. 3 1/4" (8.3cm) long, 5-40 thread. .22-.45 cal. – Steel shank, aluminum coupling. 2-7/8" (7.3cm) long, 8-32 thread. .50 cal. – Brass shank and coupling. 3 1/4" long, 8-32 thread. Shotgun – Steel shank, aluminum coupling. 2-7R
