And now another helpful answer: The handle was too short for me too. I bought a telescopic handle at the Coop (Coop's own brand). It fits wonderfully - and I assume that the (more expensive) telescopic handle available at Galaxus (https://www.galaxus.ch/de/s7/product/vileda-teleskopstiel-reinigungsutensil-5607055) would also fit.

Here, this should work Furniture-One CE roof batten

Hope to have helped you