1.Decorate you fountain with different fountain heads making it more stunning and charming! With Different fountain heads, You can select the fountain head according to water shape. It can be used for aquarium, fish tank, garden pond, pool, etc. 2.Made of plastic material, more sturdy.The water yield and water pressure range is determined by the water pump. 3.Put the pump totally in the water with it's nozzle over the water. 4.Be sure the pump is fixed firmly on the bottom of the fountain to avoid vibration. 5.It is perfect to decorate your garden pond making a fountain. Type: Heads Set size:15cm Material:plastic colour:black Package Contents: 9 * Pump Nozzle Heads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.