From the Manufacturer
The Makita 4101RH 5-inch wet-cutting masonry saw includes a Tough 7.9 amp motor and a ground fault circuit interrupter (GFCI) plug. The special cover design prevents water from entering the motor housing and the lock-on button permits for simple continuous operation. The 4101RH cuts as much as 1-3/8 inches at 90 degrees and thirteen/16-inch at 45 degrees.
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Tough 7.9 AMP motor for essentially the most demanding applications
Special cover engineered to stop water from entering into motor housing
Includes 15 ft. of tubing, water pressure regulator and water valve
Ground fault circuit interrupter (GFCI) plug
Cuts as much as 1-5/8″ at 90° and 1″ at forty five°