- Your tour still has 20 km, but your chain is broken? No problem for you if you have one of our mini-tools in your pocket. Since the trail becomes a workshop. The up to 20 tool functions of your mini tool, weighing no more than 200 grams and the size of a Swiss pocket knife, will make your bike fit again soon. The fear of flat tires, broken chains, loose screws and misaligned rear derailleurs, you can now safely leave at home.