This 3mm dia. punch replaces a worn or broken punch in your metric Swanstrom disc cutter set. It features precision-ground surfaces, to deliver smooth edges requiring minimal clean up. Made of case-hardened (57HRC) 4140 tool steel.
• Protect the surfaces of your punches by using only brass-head mallets to strike them when cutting.
• Always use BurLife® on the cutting edges of your punches to keep them cutting cleanly and efficiently for years to come.