[Higher quality material]:Uses high-grade coconut shell activated carbon block as material, which features better adsorptive ability and better performance with microscopic pores. [Sincere recommendations]: Before use, rinse 4 to 5 gallons of water through the product. Provide cleaner and fresher water by reducing impurities. [Easy to install]: no tools required, just alignment in the right direction. [Service life]: For best filtration results, filter cartridges should be replaced every six months or 200 gallons. Color: White Material: Coconut Shell Activated Carbon Package Contents: 2 x wf3cb water filter 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.