Aerofoil hosel golf club head by Golf Refugees. Do not be worried by the size of the test model 2:1 scale. It is calculated with the operating speed of the wind tunnel to simulate the average swing speed of a golfer. Wind tunnel testing at Cranfield University UK back in 2004, sponsored by Audi Design Foundation Callaway claim rights to aerofoil hosel idea for a golf club head in 2012. ----------------------------------------------------------
