The Makita DUC256CZ Brushless LXT Chainsaw is a cordless top handle chainsaw, powered by 2 x 18V Li-ion batteries in series (not supplied), to supply energy to the powerful 36V DC motor drive system. The efficient brushless motor provides excellent cutting performance equivalent to 30cc class engine chainsaws. For user safety, there is an auto power-off function, electric chain brake and kickback brake. The metal spike bumper firmly grips the workpiece to provide more control, making cutting easier. Fitted with a variable speed trigger, it also has a torque boost mode that raises the current limit temporarily for faster cutting of thicker branches. Captive nuts prevent loss of nut when removing sprocket cover to replace guide bar or saw chain. To be used by trained tree surgeons only Supplied as a Bare Unit - No Battery or Charger. Specification Bar Length 25cm Chain Speed 0-20m/s. Chain Gauge 0.050in Pitch 1/4in Weight 4.8kg