Pro-Shot Shotgun Chamber Tool & Brush 12 ga SPECIFICATIONS BRAND: PRO-SHOT CA PROP 65: YES CLEANING CALIBERS & GAUGES: 12 GA CLEANING ITEM TYPE: BRUSHES MATERIAL: BRONZE USAGE: SHOTGUN DESCRIPTION This 8" non-swivel tool has a large shotgun chamber brush that makes it easy to clean residue from chambers. Helps stop misfires and poor ejection caused by chamber fouling. Excellent for use on semi-auto shotguns. Brush is replaceable, Excellent for semi-auto shotguns!