Topeak's X-Tool is small, light and packs 10 essential, hardened-steel tools into a folding engineering-grade plastic body. Tools include: 2, 2.5, 3, 4, 5, 6, and 8mm Allen wrenches, a T25 Torx wrench, and Phillips and regular screwdrivers. Plus, at a feathery 115 grams, you won't even know you're carrying it.