New drivers continue to hit the USGA's Conforming List and, this week, both Callaway and Cobra released their models, with a total of eight listed.
Cobra's is called the OPTM, specifically the LS, Max-D, Max-K and the X. Callaway, meanwhile, have the Quantum Triple Diamond, Triple Diamond Max, Triple Diamond Tour Draw and the Max D, with these models spotted on the professional circuits this week.
