Park Tool I-Beam Mini Fold-Up Wrench includes a variety of hex wrenches, a T25 Torx wrench, and a flathead screwdriver to aid your on-trail repairs. You're looking at a long walk back to the trailhead if you can't get your bike rolling again, so be prepared with the right tools for the job. The Compact Park Tool I-Beam Mini weights only 3. 8oz, so you have no excuse to leave it at home.