The Starbuzz Challenger 2.0! One of Starbuzz best stems now has an updated brother! With an awesome gloss finish as opposed to their predecessor, the challenger 2.0 features all the things you loved about the 1.0, but upgraded! Stronger materials used in the creation and higher grade paint to keep your stem from tarnishing easily or getting scratched as easily as the last. The 2.0 is the way to go for fans of starbuzz stems as the difference is noticeable.