This water ingress tool is very helpful for the plants lovers. With this tool, no need to water plants every day, and no worry when travelling. It makes use of plastic bottle (Cola or Green Tea bottles), with full of water, and it can work for 2 weeks!<br><br>It also can help to reduce mosquitors as no water left in the plant pot and the tray!<br><br>There are 4 pieces in one package, "1" in quantity means 4 pieces.<br><br><br>