Jakob Petker deliberately chose the largest Klaas crane, as its load capacity and working ranges that even larger objects can be covered. There are no limits to the possible applications: the roofing company often also helps its colleagues from other trades when heavy materials or bulky components such as patio roofs, railings or filigree ceilings have to be transported upwards. Since its K1003 can be converted into a fully-fledged working platform, the truck-mounted crane is also popular for tree pruning and felling or work on chimneys.