The GRT 18V-33 Professional is a battery trimmer with a powerful, brushless motor for high performance, increased run time and longer life. You can manually adjust the engine speed to current working conditions to optimize run time. Electronic speed control keeps the speed constant to maintain even trimming performance. The Bosch Anti-Tangle feature provides more even trimming, preventing jamming caused by long grass or weeds wrapped around the shaft. The well-balanced, lightweight design and low noise level support effortless work. The durable Pro-Tap system with EasyWind for quick wire feed provides a cutting diameter of 33 cm. The plant protection bracket provides a neat finish at edges while protecting valuable trees and plants.