Makita GA004GZ 40V 115mm (4,1/2") Brushless Angle grinder, machine only

The Makita 40v 41/2" grinder has an anti-restart function, electric brake, and active feedback sensing technology (AFT): This shuts down the tool if the rotation speed suddenly slows down.
It also features soft start, on/off slide switch, the tool-less wheel cover is adjustable to any desired position. the GA004GZ is able to continuously perform heavy-duty cutting and grinding.
Technical capabilities
Battery Type Lithium-ion
Voltage 40 v
Bore Diameter 22.23 mm
Max Wheel Thickness 7.2 mm
Noise sound pressure 81 dB(A)
Noise sound power 92 dB(A)
Noise K factor 3 dB(A)
Max Wheel Diameter 115 mm
No Load Speed 8,500 rpm
Vibration K factor 1.5 m/sec²
Vibration: Surface Grinding 5.5 m/sec²
Net weight 2.9 machine only – 3.6 kg with battery