This is the original WW2 Jeep grill key ring hanger, designed by OCAD Militaria Collectors Resources.
The Willy's Jeep was developed by the US military in World War II. This miniature US Jeep grill hanger fits onto a key ring (not included) and is made from strong and flexible plastic. It is available in black, green, metallic plastic and stainless steel (other colours available upon request). (See M35 German helmet listing to see the actual green colour).
It would make a great present for any helmet collector, amateur historian, re-enactor or military vehicle enthusiast.