Splined hub for Bondioli mower gearbox. 20 splines, the internal diameter measured at the root of the teeth is 40 mm, and 36 mm at the top of the splines, while the non-splined part is 40 mm. The diameter of the splined section is 62 mm, and the total diameter is 98 mm. Its height is 86 mm. It has 6 mounting holes, with a hole center distance of 85 mm.