Water Bottle Filter is made of food-grade, lead-free, and materials.Use 100% coconut shell carbon block from Sri Lanka, which can maximum filtration and cleaner water possible.This Water Bottle Filter compatible for BB06, 060258363241, and most Hard Sided Water Bottle, for New Sport Soft Sided Water Bottles and Stainless Steel Water Bottle(If you are not sure whether your water bottle is suitable for our water bottle filter, you can check the replacement filter model no. at the bottom of the water bottle.)Enjoy water by replacing your filter every 2 months or 40 gallons, whichever comes first will be decided by water conditions.Water Bottle Filter can replace up to 300 standard 16.9-ounce plastic water bottles.So the filter can not only lower your costs, but also reduce the waste on plastics and protect the environment.Water Bottle Filter is very easy to install without any tools. However, the installation methods of HARD-SIDED BOTTLES and SPORTS BOTTLES are different.FOR BB06Material: plasticcolour: Black+WhitePackage Contents: 6 x Water Bottle FiltersOnly 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.