This Aquarium Valves allows you to control the flow of vital O2 from your aquarium air pump as you need. Professional and practical, very convenient. Fish tank adjusting let you operate it easily. Efficient distribution, more convenient. Valves design allow you control the flow of vital O2 from your aquarium air pump when you need. And the practical aquarium valves can meet your needs. Features -Color:Sky-blue -Material:ABS -Size:10.00X4.70X2.00cm/3.93X1.85X0.79in -The pump control-valve is partly waterproof, thus you can use it with confidence, it will be harm less for your fish. -With this item, you can control the oxygen in the fish tank more easily, which will keep your little fish in an activated condition. -Fine workmanship and safe material, our Aquarium Pumps are durable and wear resistant, that can be used for long. -Made of good material, durability and practicability, and it can be reused and for many . -This is a great air flow control-valve for fish tank, and can be replaced if it is broken, it is very helpful for you. Package list: 1 x aquarium pump