[ Ссылка ] - beast of a wall chaser from Metabo. Check out the spec and demo in this video.
MFE65 Features:

Suitable for quick and clean cutting of wall chases
Groove width adjustable
Variably adjustable cutting depth
spindle lock
Robust Metabo Marathon motor
Starting current limitation with soft start
no-volt release switch
LED informs the user about specific situations e.g. when the no-volt release switch is triggered
Roller under the motor housing for exact machine guiding
Metabo VibraTech (MVT): Reduction in the health risks caused by hand-arm vibration thanks to the integrated shock systems
Adjustable additional handle
Also suitable for cutting by using only one diamond cutting disc
overload protection
Metabo S-automatic safety shutdown: If the disc jams, the power supply is disconnected immediately
auto-stop carbon brushes
Extraction nozzle for all common suction hoses

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