This is Aquarium Fish Tank Co2 Atomizer System / Diffuser 16/22mm. Newly Safely-NutsR system designed for lock on the CO2 in atomize Stage. The usage of CO2 will much less than even, it also come out with complete dissolved rate and produces excellent effect for the aquarium. Good choice for you!<BR><!--Features --><p>FEATURES</p><UL class=p_f><LI>Easy to setup and use</LI><LI>Safely-NutsR system designed for locking trachea and water pipes effectively to prevent accidental loosening</LI><LI>Spray of CO2 and save the amount of CO2, producing excellent effect for the aquarium</LI><LI>Lightweight design and save the space of tank</LI><LI>For fresh water &amp; marine tanks</LI><IMG alt="" src="http://www.image-tmart.com/info_images/detail-P48576-1.jpg"><IMG alt="" src="http://www.image-tmart.com/info_images/detail-P48576-2.jpg"></UL><!--Specifications --><p>Specifications</p><UL><LI>Dimensions: 4.13 x 2.76 x 1.77" / 10.5 x 7 x 4.5 cm (L x W x H)</LI><LI>Weight: 2.89 oz / 82 g</LI><LI>Color: Black</LI><LI>Outer Diameter: 22mm</LI><LI>Inner Diameter: 16mm</LI></UL><P>&nbsp;</P><!--Package Includes --><p>Package Includes</p><UL><LI>1 x Up aqua CO2 Atomizer system / diffuser 16/22mm</LI></UL><!--Extra Info --><!--produts_compatibility -->