Features: This Water Filter tube can be filled with a variety of media filter housing, such as resin, stone, tourmaline base ball mineralization, for shell coconut for shell, activated charcoal, silicon, phosphor crystal, etc., can be separated with a sponge to freely mix media, fun DIY. Use of food-grade production of new materials, the water makes you feel more worry-free. Two ends can be conveniently opened to fill the filter, and can be used repeatedly, very affordable. The filter has a fine mesh cover a portion of the design, which can effectively prevent the particles. Thick filter housing design, filter cover seal design ensures leak-free, more confident to use. Two open ends, easy recharging and cleaning. Please note: Two kinds of tube adapter are sent at random. Specifications: Material: Plastic Color: Blue Size: (As picture shows) 25.5x5.5cm/10.04x2.17inches Package Includes: 1 Piece Water Filter Housing 2 Pieces Ports note: 1.Due to the difference between different monitors, the picture may not reflect  the actual color of the item. Thank you!! 2.Compare the detail sizes with yours, please allow 1-4CM differs due to manual measurement, thanks!