The Makita 36v (18v x2) Cordless Brushless Chainsaw, DUC355Z, features Makita's famous Outer Rotor Brushless Motor powered by two 18v Li- ion batteries (not included). Eliminating the need to mix fuel and 2-stroke oil the saw is also quiet and starts at the press of a button. The DUC355Z is the same as the DUC353Z but offers a keyed chain adjustment. A traditional keyed chain adjustment is often preferred as the wrench offers greater leverage to tighten to the desired level of tension. The saw boasts an impressive no load chain speed of 1,200m/min, variable speed trigger and captive bar nuts suitable for a range of applications. Automatic chain lubrication, the amount of chain oil can be regulated allowing the user to make adjustments based on whether they are cutting hard or soft wood, and it has a mains power switch with auto power off function which automatically turns off the chainsaw after no activity for 1 minute. Features and Benefits Captive nuts: prevent loss of nut when removing sprocket cover to replace guide bar or saw chain Brushless motor Variable speed control by trigger Constant speed control Electric chain brake Kickback brake Oil Capacity Display Ergonomic soft grip Large separate-type metal spike bumper. Spike grips work-piece firmly to provide more control. Adjustable automatic chain lubrication Lock-off lever Powered by two 18V Li-ion batteries in series to supply energy to the powerful 36V DC motor drive system. Main power switch with auto power-off function Battery protection system provides over-discharge protection for enhanced battery cycle life and overall battery life. Noise and Vibration Noise Level: 69 dB(A) Noise Pressure Level: 2 dB(A) Noise Power Level: 2 dB(A) Noise Pressure Level: 87.7 dB(A) Noise Power Level: 100.4 dB(A) Vibration Level: 5.3 m/s� Vibration Level: 1.5 m/s� Includes Saw chain Guide bar Guide bar cover Box wrench Bare Tool - No Battery or Charger Supplied