From the Manufacturer
This powerful 7.5 AMP 4-1/2″ angle grinder has an exclusive labyrinth construction that seals the motor and bearings from contamination. The 9557NB features a switch (AC/DC) that is conveniently located on the top of the motor housing; a small circumference barrel grip for easy handling, a high power-to-weight ratio and a double insulated motor. A spindle lock makes for easy wheel changes and the side handle can be installed on either side of tool. Kit includes grinding wheel, wrench, side handle, flange and wheel guard.
Small circumference barrel grip (only 2.5in.) for added comfort. Protective zig-zig varnish seals motor from contaminants by forming a barrier under rotation. Labyrinth construction seals and protects the motor and bearings from dust and debris by creating a complex set of channels. AC/DC switch for use with alternative power sources.
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