Power & convenience at your fingertips, the NEW, Kobalt, Quiet Tech 24-volt max, Brushless String Trimmer Kit! The Kobalt String Trimmer features a 13, or 15 inch dual-line, cutting swath and a retractable winding arm for easy line replacement, that’s twice as fast and requires 1/3 the effort. The bump-feed feature provides fast & effortless line advancement making quick work out of your toughest yard challenges. The variable-speed trigger allows for precise control, with no-load speeds of up to 5,200 revolutions per minute. The steel shaft design increases durability and the brushless motor improves performance & extends the life of your tool. All while Kobalt’s Quiet-Tech system keeps the neighbors happy. The included charger and 4.0Ah battery are compatible with all Kobalt 24-volt max tools and are backed by Kobalt’s legendary 5-year tool, and 3-year battery limited warranties.