Shimano tools A bicycle consists of a variety of components. In order for each component to provide its maximum functional performance, it's essential that it is perfectly maintained. High precision, ease of use and a consistent design are essential for repair and maintenance tools. That is why Shimano continues to dedicate itself to the development of high-quality tools. Shimano develops professional tools to the best of its ability not only for Shimano products, but also for bicycle maintenance in general. Shimano tools are shaped to fit Shimano components perfectly. The tooth profile corresponds exactly to the dimensions of the components, taking into account possible tolerances.