High windows, skylights, and other hard-to-reach smooth surfaces can now be cleaned comfortably without the hassle of climbing ladders: The telescopic extension set for the Kärcher battery-powered window vacuums and the vibrating battery-powered wiper makes this possible. The set consists of two telescopic poles, a holder for the window vacuum with a flexible joint, and a wiper with a microfiber cloth. The set provides up to 1.5 meters of additional reach, making cleaning tasks in living rooms, bathrooms, or conservatories up to approximately 3 meters high effortlessly manageable even for shorter individuals.