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 5/8" Filter Height 10" Diameter 2"