Would you want to purchase a professional but practical water level monitor for your art gardening activities? Our products must meet your requirements. Made from strong plastic material and can be used for a long time. Features - - Material: Plastic - 300# Size: About 36.00X2.00X2.00cm/14.15X0.79X0.79in - 180# Size: About 22.80X2.00X2.00cm/8.96X0.79X0.79in - Adopting from good plastic material, which is lightweight, with and good workmanship. - No tools required and zero assembly, easy and convenient to use, practical gardening tool. - Don't water too much! And the buoy of indicators should not water mark. - General watering volume buoys are shown in the third and fourth positions mark best. - When there is no more water in the flower pot, the buoy of the water level gauge will be at the bottom. Package list: 2 Level Indicators (300#) 2 Level Indicators (180#)