What is a Telescope handle?

Cleaning windows, solar panels, work buses and you name it, the benefits of a telescopic handle are endless. This makes work much safer by reducing the need for a ladder. The work becomes much more efficient by cleaning in places where it was not possible before. Often the stems are water-permeable which saves costs and ensures optimal cleaning. Also, they are multi-purpose; use as washing in, wiping, brushing and pulling. Telescopic handles are made of various types of material. Consider carbon, for example, as well as aluminum.