Official Extra Pre-Filter Kit (previously Upgrade Kit) for the Survivor Filter PRO and Electric PRO X Filter Systems.The Extra Pre-Filter Kit Includes:1 Ultra Filter Pre-Filter2 hoses (1 inlet hose, 1 outlet hose)Hose clipFloatZippered carrying case with wrist strapInstruction ManualThe highlight of the Extra Pre-Filter Kit is the Ultra Membrane Pre-Filter, which is designed to get you the most out of your Survivor FilterA(R) PRO, Electric PRO X and rated to filter up to 100,000 liters (26,417 gallons)!Extend the life of your Survivor Filter PRO and Electric PRO X Carbon and Internal Ultra Filter, by pre-treating the water with a 0.1 Micron Filter, before it even gets to the Carbon Filter and Internal Ultra Filter!Reliable and Easy to Use! Highest Quality Materials: ABS plastic, Ultra Membrane Fibers and Polysulfone materials that are very long-lasting, non-oxidizing and reliable0.1 Micron Ultra Filter Pre-Filter acts like a barrier to help remove Pollen, Algae, Large Particles, Giardia, E. Coli, Protozoan Cysts, Cryptosporidium, Toxin and Heavy MetalsEasy to clean and backwash, the Ultra Filter Pre-Filter is designed to last you a Lifetime!Designed with a high-capacity technology that allows it to be rated to 100, 000 liters, or we will send you a new one! Weighs only 3.5 ounces, up to 90% less than competing filter parts!Easily fits in your Glove box, tackle box, knapsack or BUG-OUT bagLarger, longer and reinforced tubes are included and are designed to increase the flow rate of your Survivor Filter PROA(R) and Electric PRO XBPA and Taste FreeDetailed manual is included, featuring high-quality photos and step-by-step cleaning and maintenance guides