Is that a brand name? I'm thinking you mean you are looking at rocker arms with an increased ratio over stock. All rocker arms have a ratio, which basically means it multiplies the cam's lobe lift. A higher ratio arm increases lift more.
Here is some reading for you:
http://www.popularhotrodding.com/eng...tio/index.html
http://www.pontiacstreetperformance....ockerArms.html