The water level indicator gauge caps are made from plastic materials, which assures that they are practical and lasting.The caps are also designed to be easy to use, with a simple design that requires no additional tools for easy installation. Features -Color:Assorted Color -Material:Plastic -Size:4.50X1.40X1.40cm/1.77X0.55X0.55in - The water level float can remind you in time when the water level in the flower pot is low. - The water level indicator caps are designed to be highly clearly, allow you read display that shows the water level. - The scale caps are easy to clean, with a simple cleaning process that requires no special tools. - With strong stability and durability, scale caps can be used directly to replace old or water level float caps. - The scale caps are simple and easy to use, suitable for water level indicator in flower pots. Package list: 5 Level Indicator Tip Caps