Up to 500 cuts on 50 x 50 pine using 2 x 5.0Ah. Torque boost mode - increases torque for better cutting efficiency. Additional safety and control with a kickback brake and metal bumper. 18Vx2 brushless motor provides chain speed of 1200m/min. Captive bar nut allows for efficient chainsaw maintenance. XPT for increased dust and moisture resistance.