A precision machined 15mm spanner for tracknuts, while a broad, flat, palm-shaped handle gives you a lot of leverage without needing a long, heavy grip.
There's a bottleopener on the bottom, too (to encourage you to carry it at all times).
Surly's Jethro Tule pocket tool is crafted from stainless-steel, then polished to a high luster.
The Jethro Tule fits nicely on a key chain and is light enough to carry comfortably anywhere.
