The FITTING-TOOL-ALU-10-50 allows particularly cost-effective mounting of many standardized rolling bearings (Bore Diameter of 10 to 50 mm) and other parts. The low mass of the components makes this mounting tool set Very easy to handle. The tool set contains 33 different mounting rings and 3 mounting sleeves as well as a hammer. The mounting rings are made from impact-resistant plastic. This prevents metal/metal contact As well as damage to or premature wear of the bearing Seatings. The mounting sleeves are made from aluminum. The head of the Recoilless Hammer (1 kg Mass) produces no sparks. Each mounting sleeve can be pushed over the shaft end as far as 220 mm. The combination of mounting ring and mounting sleeve required for the application in question can be found in the table inside the lid of the case. The parts are driven on by hitting the mounting sleeve using the supplied hammer. The components of the tool set are housed in a practical case.