3 IN 1 FISH TANK CLEANING TOOLS:Hand tools, no need for electricity, no need to worry about leaking electricity hurting your precious fish. Easy to complete: Gravel cleaner;Clean waste;Water change GRAVEL VACUUM FOR AQUARIUM:Ideal for large aquariums. The suction power of the fish tank vacuum cleaner tube ensures easy and effective cleaning of the fish tank and the maintenance of the aquarium ecosystem ADJUSTABLE OUTLET WATER FLOW:Aquarium vacuum outlet has valves to control the flow of water, giving you enough time to clean the tank during the water change EASY TO INSTALL AND USE:aquarium siphon is easy to install, easy to use, as long as you follow Follow the siphon principle of high and low water levels, squeezing the special oversized siphon ball can generate strong pressure and suction, and easily complete the fish tank cleaning work Colour:grey Material:plastic Package Contents: 1 * Fish Tank Water Changer set 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.