My father handed me this tool, saying I might need it one day. I still don’t know what it’s for, and he just laughs whenever I ask. The handle is hollow.

“That’s an old oil can opener,” he said simply, with a faint smile that suggested nostalgia rather than surprise. According to him, tools like this were far more common in earlier decades, when motor oil was stored in sealed metal cans rather than modern plastic containers.

He explained that its purpose was very practical. In workshops and garages, mechanics needed a reliable way to open those sealed metal cans without spilling oil everywhere or damaging the container in an uncontrolled way. This tool solved that exact problem with a simple but clever design.

The way it worked was surprisingly straightforward. It would be placed on top of the metal lid and pressed or twisted in a controlled motion, creating a clean puncture or opening. This allowed the oil to be poured more precisely, reducing waste and avoiding the mess that would otherwise come from forcing the lid open with improvised tools.