The primary function of the JPX-850’s Shock Wave sole is to enable the entire club head to contract and expand on impact – delivering more of the energy from the swing to the ball for increased distance. The additional mass also lowers the head’s center of gravity, enabling easy launch from strikes direct from the turf.
There is a 4 degree range of loft adjustment possible within each fairway head (3/5/7) through the use of Mizuno’s Quick Switch shaft adjustability.