Rather big for the job,
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This review is from: Kärcher Wheel Rim Brush - Pressure Washer Accessory (DIY & Tools)
Like all Karcher equipment this is well made but I feel it is too big to tackle the tricky corners in the wheel rim. If it were half the size (or perhaps I should say half the diameter) it would do a much better job of getting into the vertices. As it is, it is necessary to resort to a sponge to remove the stubborn bits of dirt and grime that the brush is too large to touch.