Zippo lighters are traditionally made of brass, but during WW2, due to shortages, zippos made of steel with a textured black paint were issued to allied soldiers. The black lighter is a reproduction of such a lighter. The case is made of steel. I added a rubber seal at the bottom to make it last longer. 

The silver lighter is a reproduction of a discontinued Zippo model from the Brand Zorro. It's made of brass and chrome plated.

P.S. - The canadian post service is currently on strike and USPS seems to be struggling with the tarrifs and everything. I know it's more expensive but I would recommend selecting FEDEX if you don't want your package to be late.