Features A heavy duty machine for punching round or elongated holes in copper or aluminium. The calibrated end stop can be rotated out of the way when long bars are being punched. The two calibrated back-stops are coupled......Features A heavy duty machine for punching round or elongated holes in copper or aluminium. The calibrated end stop can be rotated out of the way when long bars are being punched. The two calibrated back-stops are coupled together and ensure that the bar is positioned square to the machine. There are two dies for each punch size to cover copper thickness 0-5mm and 5-10mm. A pressure plate is available for use with flexible bar and for punching holes near the end of the solid bar.