The Sylvan Arms Firearm Universal Chamber Safety Flag is a reliable means of indicating that your firearms chamber is empty, making it safe to store and handle. Features & Benefits Ensures firearm chamber is empty for safe storage and handling Vivid, red-orange color for clear visibility from any position or angle Made from impact resistant polymer Specifications Fit: .22, .27, and .30 caliber rifle chambers, 12 and 20 gauge shotguns Material: Impact resistant polymer Dimensions: 5.5 x 2.8 x 1.2 inches Weight: 1.6 oz Packagin 8 flags per pack and 3 empty chamber tags