Crosman Copperhead BBs, 600-Count: * For age 16 and up * Caliber: .177 * Compatible with .177 caliber air rifles and pistols * Weight: 5.28 grains * Material: copper-coated steel * Flip-top plastic bottle with pouring spout * 4.50"L x 2.75"W x .88"H * Model# 0647