A thank-you to Zargras for this one. Zargras showed me a real game where the 32px icons were doing their job in the inventory, but one screen needed a single fish shown large, and 32 jus wasn't enough there. That made it clear the pack should offer bigger sizes so a game can use the same icons everywhere, not only in grids.
Same file names as the 32px set. Point your large view at the 128 folder and nothing else changes.
If you're using the pack somewhere the 32s don't fit, tell me. Requests like this are how the pack gets better.