DeWalt DCMST561N-XJ 18V XR Brushless String Trimmer (Body Only) The DCMST561N 18V XR Brushless String Trimmer is ideal for both professional gardeners and DIY users. DCMST561N has a 400 MWO brushless motor which ensures maximum power. Its fully variable trigger provides the user with full control of the tool, and the ergonomically deisgned padded rubber aux handle ensures optimal comfort and reduces user fatigue. The trimmer also has patented split shaft mechanism allowing for easy transportation and storage. Furthermore, enclosed mechanism protects the cord from damage or fraying. DCMST561N-XJ Features: - Power Run Time - Power to do the Job, Run time for the day. 36cm swath with 40 minutes runtime on low, no load - Split Shaft - Patented split shaft mechanism allowing for.