This is for 2 boxes of 5.56mm M1042 Marking training rounds. Each box contains 30 rounds of red marking training cartridges. The rounds are housed in an aluminum casing with a polymer tip. These rounds are frequently used with the Close Combat Mission Capability kits. This ammo leaves a red spot on you, but it can be lethal if not careful. The code on this box is UMK10G542-001.