1. It is made of stainless steel, high strength, sturdy and practical. 2. The thickness of 5mm ensures sufficient thickness to ensure that the wrench is not easy to bend and deform when adjusting the disc. 3. 42mm open end is suitable for vigorously adjusting the large swing that occurs from the root of the disc. 4. 15mm open end is suitable for fine adjustment and correction of small swing in a small range. 5. A necessity for cyclists, useful and practical to use.
