Makita XCU06SM1 Brushless Top Handle Chainsaw Kit with 18V 4.0Ah Battery has a variable speed trigger and high chain speed (0-4,720 FPM) for increased cutting speed, with torque boost mode for cutting dense material. It has zero emissions and reduced maintenance: there's no engine oil to change, no spark plug to replace, and no air filter or muffler to clean. And there's no need to drain the fuel for storage. Simply load the 18V LXT Lithium-Ion battery, and the saw is ready to use. Convenience features include adjustable automatic chain lubrication, built-on lock-off lever to help prevent the chain from accidentally engaging, an electric brake for maximum productivity, and more.