SPECIFICATIONS Battery System: M18 Fuelâ„¢ Voltage: 18V Max Power Speed: 4600 rpm Bar Length: 10 in Chain Gauge: 0.043 in Chain Pitch: 3/8 in - Low Profile Power Head Length: 3.0 ft Shaft Length: 4.0 ft Extension Length: 3.0 ft (x2) Overall Length (fully assembled): 12.0 ft Width (powerhead): 9 in Height (powerhead): 6.5 in Weight: 12.0 lbs