This lighter has a standard case shape featuring rounded corners and top with a flat bottom. All metal construction; windproof design works virtually anywhere. Refillable for a lifetime of use; for optimum performance. Like the outside, the sides of the inside unit are flatter, with squared edges where they meet the front and back surfaces. The inside unit has fewer holes in the chimney, and is also fitted with a hollow rivet that holds the striking wheel in place. Great for the workbench, tool box, garage, emergency kit, BBQ grill or just handy to have around.