Mitsubishi Chemical Diamana RF-Series Graphite Wood Shafts - We’ve taken our tour proven, time tested Red Board profile and enhanced it using Mitsubishi Chemical's latest design and material innovations, to create the next generation Diamana™ RF-Series. Strategically positioned DIALEAD™ Pitch Fiber, MR70 and boron fiber infused hybrid prepreg deliver unmatched strength, stability and performance from this higher launching profile. Engineering - The Diamana™ RF-Series represents the next generation version of MCA GOLF’s signature “active” bend profile. The new RF-Series, like its most recent predecessor the Diamana™ R-Series, incorporates high-strength DIALEAD™ Pitch Fiber by Mitsubishi Chemical into the butt-section of the shaft, adding unprecedented strength and control during shaft loading and unloading. Featured Material: MR70 - The new Diamana™ RF-Series incorporates for the first time a new hybrid prepreg developed by the engineers at Mitsubishi Chemical. This new prepreg combines boron fiber and Mitsubishi Chemical’s latest carbon fiber innovation MR70. Mitsubishi Chemical’s MR70 by is 20% stronger and has 10% higher modulus than conventional carbon fibers. Strategically positioned in the tip-section of the shaft this hybrid prepreg provides unprecedented strength and stability at impact. Features: The RF Series represents the next generation version of MCA Golf’s “active” bend profile. High-strength DIALEAD™ Pitch Fiber adds unprecedented strength and control during shaft loading and unloading. Utilizes a prepreg that combines born fiber and Mitsubishi Chemical’s carbon fiber innovation MR70. Designed to produce a higher launch with mid spin.