Description: High quality coconut shell activated carbon materials , strong adsorption for the adsorption of chlorine, color, odor etc. Replace the recommended six months or so , depending on the water quality and water consumption around the Coconut shell granular activated carbon : Coconut shell granular activated carbon to import coconut shell as materials , refined through carbonization, activation , appearance of amorphous particles . The product has developed pore structure , large surface area , strong adsorption capacity , high mechanical strength , and high purity . Mainly used for drinking water, alcohol, beverages and materials such as water purification , can be used for removal of harmful impurities in the drinking water , purify drinking water has an excellent performance , it will not only be able to remove different smelly odor and reduce the color , water and various impurities such as chlorine, phenol, mercury, , , detergents and other toxic substances have a high removal rate is filled with family, hotels , and advanced water purification an great material for production equipment . Apply to the vast majority of brand water machine/Water purifier! Specification: Material: Plastic, PP Cotton and Activated Carbon Color: Random Size: (DiaxL)Approx. 4.8x15.6cm/1.89x6.14inch Package Includes: 1 Piece Water Purifier Filter(2 Pack) Note: Please allow 1-3mm error due to manual measurement. And make sure you do not mind before you bid. The colors may have different as the difference display,pls understand.