Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor quality

The shower head leaked when I first installed it. An extra washer between the filter holder and the hose fixed that. After six months or so, the pressure seemed low so I replace the filter. As I disassembled it, I noticed hairline cracks in the head. When I screwed it back on after changing the filter, the cracks had grown enough to generate a small stream of water. New Market Naturals cheerfully replaced the head under warranty, but the second one suffered from the same problem after six months or so. If you buy this product, plan to replace the head every time you replace the filter. You'll also need to replace the washers, not a big deal but still a pain because they're not included with the filters.