In each of the 17-4 stainless steel Anser hybrids internal and external weighting is utilized to progressively locate the CG position, optimizing it for that particular loft. In the 17º, the CG is slightly lower and farther back to help launch the ball higher while maintaining the correct spin for a strong ball flight. As the lofts increase, the CG is relatively more forward to ensure the best possible launch conditions for that club.
The lower portion of the clubface has been extended and squared off, which offers three main benefits. One, it makes aiming at your intended target more accurate and repeatable. Two, it positions mass further from the CG, driving up the MOI. And three, it positions mass lower in the clubhead, which helps to optimize the spin rate.