The Flex-Unit for Multiple Punching Tasks! Pearl has introduced a new concept in punching units called "Flex-Unit." Our innovative flexible design offers unique advantages over traditional punching, providing the ability to quickly change punch shapes and sizes. This allows film and pouch converters use of a single punching unit on several jobs. It's as simple as bolting on a die insert and punch which universally fit the "Flex-Unit." Available in any shape or size to meet your exact specifications.