Bevel gear set, spiral, module 3, no. of teeth, 10/25, ratio 2.5:1, steel 16MnCr5, teeth hardened. The supplied pictures and technical drawings are made with reasonable care. Nevertheless, liability is excluded for the accuracy and correctness of this data. Note for ordering: These gears are sold singularly, not by pair. For a pair of bevel gears, you have to order two matching gears of the same module and ratio.