The Velox Tire Changers make it easier to mount / remove the tire in order to get away with your bike more quickly. They can be clipped between them, which makes it easier to find them in the jersey pocket as well as in the pannier bag. Velox saddle where they can be stored.Finally, a small flint extractor integrated and hidden in a tire iron, helps to remove the bits of glass or flint to prevent a possible puncture of the tire. 1 bag of 100 tire levers Velox and 33 flint extractors