High Quality Material: The Aquarium Pipette Dropper is made of plastic and will not harm your fish,Durable. Unique Design:This fish tank water changer can remove the dirt and residual feed at the fish tank bottom. Small Size:suitable for small household fish tanks,very convenient,Lengthened design to meet the needs of most people. Easy to use:With 4 scales on the pipe (10 ml/15 ml/20 ml/30 ml), easy to read standard measurement markings, easy for you to measure the liquid. Widely used: Can be used to clean fish manure and feed,Aquarium dropper water purifier can also be regarded as a small fish tank and aquarium water changer. Pipette Feeder Water Cleaner Specification: Material: plastic Dropper length: about 28 cm / 11 inch Extension tube length: about 24 cm / 9.4 inch Short tube length:5 cm/1.96inch Color: blue Quantity: 1 piece