ST190 Driver Perfect Recipe of MOI and Low Spin The ST190 drivers offer Mizuno's lowest spin rates and incorporate every known factor in the quest to enhance ball speed and driving distance. Mizuno's ultra-fast Forged SP700 Ti face now boasts a lighter CORTECH structure to deliver consistently higher ball speeds, with a larger carbon composite crown plus the Amplified Wave soleplate, introduced in last year's ST180 drivers, helping to convert each additional MPH into extra miles. SP700 Forged CO