Meet the Birzman Feexman E-Version multi tool - a tough, no - fuss companion for cyclists. It's built to get you back on the road fast. This 15 - function tool includes seven Hex keys (2, 2.5, 3, 4, 5, 6, 8 mm), a Torx® key T25, a #1 cross - head screwdriver, a 9 - 12 speed chain tool, and four spoke wrenches (3.2, 3.4, 4.0, 4.4). It's perfect for roadside emergencies. The E - version tools feature Chrome Vanadium steel bits, steel side plates, and connecting bolts for smooth operation. With high - quality construction and a great price, it covers all your roadside repair needs.

Using this multi tool is easy. When you need to adjust something on your bike, just pick the right bit for the job. For example, if you need to tighten a bolt, find the matching Hex key. When using the chain tool, make sure your bike chain is in the right position and turn the tool carefully. Remember to handle the tool gently to avoid damage. After each use, wipe it clean with a dry cloth to keep it in good condition. Store it in a dry place to prevent rusting. If you're not sure which bit to use, refer to your bike's manual or ask a bike expert.