Uses Relativities in several plastics: the Neutron one is their main long driver without a headwind, for hyzer flips or long gliding hyzers, and the Proton one is beefier, good up to 15 mph headwinds.
“The Nu R is next, and my main long driver when head wind isn't an issue either hyzer flip or long gliding steeper hyzers. The Proton R is a little”