ITEM NAME:New Aquarium Fish Tank Air Filter Media Activated Carbon Purification 20 VQO Descriptio n Description: Material: charcoal Color: picture color Dimensions: 0.4cm in diameter and 1-4cm in length (different lengths) Features: Role: adsorption / filtration 1. Water treatment (industrial wastewater / domestic sewage) 2. Air purification (adsorption of exhaust gas / impurities) 3. Deodorization, removal of heavy metals in water 4. Liquid discoloration, gas separation Package included: 200g* activated carbon Note: 1.As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2.Please allow 1-3 CM differs due to manual measurement. Thanks for your understanding. We offer you what you need! Activated carbon Aquarium Fish Tank Water Air Filter Media.Air purification (adsorption of exhaust gas / impurities). Material: charcoal. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. We'd like to settle any problem in a friendly manner.