EASY TO INSTALL - Select the right adapter according to your faucet. The universal adapter is needed a screwdriver. Other adapters can be installed without tools. ADAPTERS FOR STANDARD TAP FAUCET - Each tap water filter package contains adapters for most tap faucets different adapters suit for different types of faucet, different sizes of silicone ring are included to prevent water leakage. EASY TO USE AND OPERATE - Clockwise or counterclockwise rotate the black plastic switcher to switch between tap water and filtered water freely. You can choose according to your needs. The water filter connector can be rotated 360 degrees horizontall HIGH-QUALITY CERAMICS FILTER ELEMENT -The filter element of faucet water filter is produced by the most advanced porous inorganic micro filter technology, inhibit bacterial growth, improve taste, and filter out dirt, sand, rust, organics, fluoride, c DURABLE AND LONG LIFE TIME - Rugged ABS plastic shell, it will not rust, not easy to break, cracking-proof, durable. The tap water filter equipped with a high-quality filter, can be normally used for 3-6 months, please check the element color regular