From the announcement:
Games & Gears has announced a custom version of their Games & Gears Pro Studio Line. Their Masters Hybrid Series Brush Line is an evolution to the Pro Studio line. Intended for Master Painters all over the world this superior higher end series consist initial of a mix of brush sizes on the Games & Gears dual head brush system. The following to be released in a few weeks:
00 – 0 Games & Gears © Masters Hybrid Brush
1 – 2 Games & Gears © Masters Hybrid Brush
3LX – 4RX Games & Gears © Masters Hybrid Brush
So you get two different sizes on the Games & Gears dual brush system. Pictures and more to be released within July. Release to follow very soon after.