With zero emissions, lower noise, and considerably less maintenance, the 18V LXT@ Brushless Cordless String Trimmer Kit (XRU23SM1) is a welcome solution for landscapers. The string trimmer is ideal for precision trimming and edging. It features an efficient Makita-built brushless motor for longer run time, increased power and speed, and longer tool life.The efficient brushless motor delivers up to 6,000 RPM for faster cutting. The trimmer delivers up to 1 hour of run time when using an 18V LXT 4.0Ah Battery. It features a variable speed trigger to control cutting speed and a high/low button to manage power and run time. The rapid load bump-and-feed trimmer head is loads line in seconds with 3 easy steps.The XRU23Z features Makita’s Extreme Protection Technology (XPT™). XPT™ is a protective seal inside the tool and is engineered for improved operation in harsh conditions by channeling water and dust from key internal components.It’s part of Makita’s expanding 18V LXT System, the world’s largest cordless tool system powered by 18V lithium-ion slide-style batteries. Makita@ 18V LXT@ Lithium-Ion Batteries have the fastest charge times in their categories, so they spend more time working and less time sitting on the charger.For improved tool performance and extended battery life, Makita created Star Protection Computer Controls™. Star Protection is communication technology that allows the Star Protection-equipped tool and battery to exchange data in real time and monitor conditions during use to protect against overloading, over-discharging and overheating. For increased versatility, the tool can also be powered by Makita@ 18V LXT@ Lithium-Ion Batteries with the star symbol on the battery indicating Star Protection inside.