Abstract: A combination hole punching and reinforcing device for punching holes in sheets of paper and other sheet materials applies flat reinforcement rings about holes formed in those sheets concurrently as the holes are formed. The device employs a die punch, which is preferably configured as a disposable item that is detachable from the lower end of the punching ram. The die punch is configured with a punching tip at its lower extremity and a shank that is preferably narrower than the punching tip. A plurality of reinforcement rings are stacked one atop each other and are carried upon a shoulder formed at the demarcation between the die punch tip and the die punch shank. A transverse pressure plate located atop the shank applies pressure to sequentially affix the lowermost reinforcement ring in the stack to a sheet of paper concurrently with the formation of an aperture through that sheet.