The specs are set, but there could be very minor variances from the first samples to the finals. On the samples we have now the BBTG is 1.875″. No date on the Pro. We made some changes and we are waiting on the next set of samples which are suppose to ship to us next week. IF the new samples are approved, we would be looking at approximately 90-120 days for production, IF (big IF) there are no unforeseen delays due to circumstances beyond our control or the control of the factory. We also loose about 2-3 weeks with the Chinese New Year coming up. Hopefully if we approve these samples, we would have the Pro driver available by mid May or June. We are pushing for sooner.