This 4-1/2-inch angle grinder has an exclusive labyrinth construction that seals the motor and bearings from contamination. The 9554NB features a switch 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. The kit includes grinding wheel, wrench, side handle, flange, wheel guard, and tool case.