An IADC standard system was defined and implemented in 1987 with revisions in 1992 to standardize and permit the accurate dull grading of fixed cutter bits. Now as hole enlargement is one of the fastest growing sectors of today's drilling industry, there is a greater need for an accurate and uniform dull grading system for fixed cutter hole enlargement tools. Through collaboration between an operator and a bit manufacturer, this new dull grading protocol is being proposed to better characterize hole enlargement tool dull conditions. The method will be described in this paper and will encompass concentric, eccentric, and expandable tools. It will define common elements of hole enlargement tool cutting structures and the dull grades relating to this BHA component as they differ from drill bits. Adoption of this new dull grading system for fixed cutter hole enlargement tools will facilitate an industry-wide standard to more accurately communicate dull conditions. This will enable operators, drilling contractors, and bit manufacturers to improve the tool's design, selection, and operating parameters for future applications.