Stationer's Punch 6 mm
This plier punches a single 6 mm (1/4") diameter hole up to 32 mm (1.1/4") from the edge of the paper, and will pierce up to 30 sheets of 70g/m² paper in one operation.
It is spring-loaded and has an additional spring stripper over the punch to ensure that thew punch clears after piercing the paper.
This plier is zinc plated and has an anti-rust finish.
What is this tool used for?