Aluminum Punch Sheets: 0.3MM
These 3pcs aluminum sheets are designed to work with the UMM Multi Shape Punch Set. (UMM10)
The 0.3 MM thick sheet is 3.5 inches (90 mm) by 2.5 inches (60 mm) and there are three in each package.
These should give you 5000 punch pieces.

Future Releases: 0.1MM, 0.2MM & 0.3MM

UMM10 Multi Shape Punch
http://umm-usa.com/onlinestore/product_info.php?products_id=5586