The EGO POWER+ Multi-Tool 40cm Line Trimmer with POWERLOAD™ technology automatically winds your trimmer line. Replacing your cutting line is as easy as feeding the cutting into the head and pressing a button—getting you back to work in seconds! Designed for convenient and efficient trimming, built to get your tough jobs done. The STA1600 attachments is designed specifically for your EGO POWER+ Power Head (PH1420E) and offer the highest quality and performance. Experience Power Beyond Belief™ without the noise, fuss, or fumes. Please note the POWERLOAD™ function will only work in combination with the Upgraded Power Head (PH1420E), this function will not work with the older Power Head (PH1400E) however the line trimming function will still continue to work.