You can craft magic rods of epic power.
Prerequisites: Craft Rod, Knowledge (arcana) 32 ranks, Spellcraft 32 ranks.
Benefit: The character can craft rods that exceed the normal limits for such items. For instance, you could craft a rod with an enhancement bonus greater than +5 or a rod with prerequisite spells of higher than 9th level. See Creating Rods for details.
Source: Standard Reference Document under Open Game License v1.0a, which updated this feat originally published in the Epic Level Handbook, page 52.