Ideal 8570 punch pins, punch bits or punch cutters, pack of 2 for Ideal heavy duty two/four hole punch.
IDEAL 8570 heavy duty paper punch HSS cutters / punch bits, teflon coated.
The Teflon acts as a lubrication on the surface of the punch, which helps avoid paper sticking.
Hole Size Diameter: 6mm.
Picture of Ideal 8570 Punch for reference