The einhell gh pt 2538 as grass trimmer is fitted with a high quality low vibration two stroke engine which together with the quick start system with an easy to reach primer and auto choke enables quick user friendly starting the twin line automatic jog line feed system produces a clean cut and no tools are required to change the twin line spool the gh pt 2538 as petrol grass trimmer is a powerful tool with which enables you to trim hard to reach areas of the garden quickly easily and effectivel