The Racer Tire Plug Tool packs both standard soft-nose plugs and larger Megaplugs into a single 14-gram body, so one tool covers a wider range of puncture sizes without the bulk of a full-size kit. Snap-on caps keep the plugs clean and let the tool deploy quickly when a flat happens mid-ride. A silicone holder mounts under a bottle cage for riders who want the tool within reach without digging through a pack, though it's built with road riding in mind. On rougher trails, brush and debris can knock it loose, so Dynaplug recommends carrying it elsewhere for anything beyond smooth terrain. What Our Gearhead(R) Experts Are Saying:"I ran this under my cage for a full gravel century and never thought about it again until I needed it. I wouldn't trust that mount on singletrack, but for road and smooth gravel it's exactly where I want a repair tool to live."