J. Wenning Grinding & Supply Inc. also offers straight perfs for the Printing industry as well. A description is listed below:
Although the cost of perfs blades are low; the cost of blade failure can be inmeasurable. That is why we supply only the finest hardened carbon steel testing upto 50RC. The rule is then punched and ground to a double bevel with only state-of-the-art equipment. All rules are produced to the scrictest tolerances and are unbconditionally guaranteed.
While listing every dimension would be futile; we have many common sizes for immediate shipment in addition to being able to produce any custom size needed.