Officially licensed United States Marine Corps bullet twist pen Made from a real 50 caliber casing that was once fired Comes complete with a gift box that replicates a real rifle case aesthetically and functionally; Two working clasps and a hinged handle for a secure closure; A sleek tactical exterior and dense foam interior Officially licensed by the United States Marine Corps and a portion of proceeds directly benefit Veterans and their families Pen refill is standard CROSS style 8514-2 ballpoint pen refill