Instapure F-2C

http://www.waterfilters.net/Waterpik-F-2C-Faucet-Mount-Water-Filter.html
The F-2C faucet system reduces bad taste and odor including chlorine taste and odor. It easily installs on most kitchen faucets with no special tools. The Waterpik InstaPure F-2C system allows you to choose between filtered water and unfiltered water to extend the water filter life. The F-2C is tested and certified by NSF International against ANSI/NSF Standard 42 for the reduction of Chlorine (Class II), Taste and Odor. The Waterpik F-2C faucet filter system has a chrome base with a clear cap and comes complete with a filter cartridge.