The Sterasyl™ ceramic is fitted with an activated carbon block insert to produce the Supercarb™ filter element. Among other things, activated carbon is very effective at removing chlorine and organics from water. Supercarb™ is designed to be used in pressure filters (on a mains water supply), not in gravity filters. Benefits: Supercarb™ has all the benefits of Sterasyl™ (removal of particles, pathogenic bacteria, cysts etc.) with additional chlorine and organics removal capabilities. Dimensions Thread 1/4 bsp Length 3/4" Filter Height 10" Diameter 2"