This tool is perfectly suited to the removal of Hansa cartridges: we need a hex wrench 45 mm. Note: in the trade of conventional tooling, this dimension is not standard. The + is approaching 46 mm. Put a nut of 46 mm instead of 45 mm on their mixer would have changed his appearance, and would have been easier for everyone! One would think that at Hansa, they do not want their customers to repair their mixers ... you have to buy THEIR key. Its price is not excessive, but it must bring, and wait to do the job ...