CLICK HERE FOR VIDEO on the MSR Miniworks EX Microfilter Overview Replacement MSR Miniworks EX Water Filter Replacement Ceramic Element fits both MiniWorks and WaterWorks microfilters provides increased flow rates for older models. Replacement filter for MSR Miniworks EX and Waterworks water filters. 45 percent faster Air Spring Accumulator uses air to push water through the ceramic faster. Removes bacteria, pesticides, giardia, cryptosporidia, iodine, chlorine, and odors. Ceramic gauge measuring tool tells you when the filter needs replacing. Scrubbing pad included. Weighs: 4.2 oz.