DescriptionThis product is a simple andpractical fish tank filter material kit, which is very suitable for fishtank or aquarium use, and very suitable for your water oxidation andhelp gasexchange process. Therefore, an gift choice for your friends whowant to farm some pet fishes.Features- Color: black. - Material: activated carbon, coconut shell charcoal. - Size: 20.00X10.00X4.00cm/7.86X3.93X1.57in. - Its surface area and tiny pores make them an home for you to circulate bad substances in the filter.- Suitable for personal household fish tank or shop fish tank use.- Made of safe and premium material, very durable and practical.- Make your fish tank or aquariumlook more clean and fresh.- Can be sent to your close friends or families who want to farm pet fishes as an gift.