I used this to clean the tile line around my pool (in ground, shotcrete). The brushes are comfortable to hold and clean, but fell apart on first use (less than 1 hour). The bristles were bent, detached and fell out. I didn't know how many fell out until the next morning I found a lot of completely rusty V-shaped wires scattered across the bottom of my pool. These brushes weren't expensive, but they weren't of good quality. They may be suitable for light work. I would not recommend it.
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