The Worx Nitro 40V 15" Cordless String Trimmer offers gas-like performance to support a variety of grass trimming tasks?such as removing weeds, clearing, overgrown grass, and cleaning up sidewalk, driveway, and retaining wall edges. Backed by 40V of gas-like power, the high-performance dual-exit cutting head provides an expansive 15" cut width to cover more ground and complete tasks quickly. The high-efficiency Brushless Motor 2.0 delivers 40% more power and 10% longer runtime than first-gen brushless motors, and a 10X longer life than trimmers with a standard brush motor. Use 4.0Ah Power Share PRO batteries (included with model WG185) to extend the lawn trimmer runtime even further, so you can longer without having to stop to recharge. Use the bump-feed system to advance trimmer line with a simple tap on the ground, giving you tighter control over how much line you use. When you're out of trimmer line, use the easy-load spool head to quickly reload: Simply cut new 0.095" line to the appropriate length, feed new line through the head, check that the length is equal on both sides, and twist to load. Find the right speed for your specific trimming task using the variable speed control, conveniently located on the handle for easy adjustment?simply feather the trigger to seamlessly adapt the speed. For lighter tasks, switch to ECO mode to conserve battery power and extend runtime on lighter trimming tasks that require a gentle touch?such as cleaning up around flowerbeds. At only 9.42 lbs. this compact and lightweight grass trimmer is incredibly easy to carry and maneuver around the yard. Plus, with the adjustable D-handle, you can maintain a comfortable posture while you work and enjoy seamless one-handed control over the 2-stage trigger.