KEY FEATURES: 2 x 4.0Ah Li-Ion Batteries, Adjustable Guard, 2-Position Side Handle, All-Metal Gearing, Charge Time, Fan-Cooled Motor, Lock-Off Switch, Low Vibration, Multi-Voltage Charger. SPECIFICATIONS: No Load Speed 7000 rpm, Max. Disc Diameter 125 mm, Spindle Thread M14, Weight 2.9 kg, Length 400 mm, Height 125 mm, Hand/Arm Vibration ? Grinding 6.0 m/s?, Uncertainty K 1 (Vibration)-1.5 m/s?, Sound Pressure-87 dB(A), Sound Power-98 dB(A), Sound Power Uncertainty 5 dB(A), Battery chemistry-XR Li-Ion, Voltage-18 V.