Wilson Pd6 Driver. New for 2006. Designed and used by Wilson Staff player Padraig Harrington. With a deep face 410cc head and mid-sole L-Pods, the new Wilson Pd6 performance driver delivers a lower, tighter trajectory and maximum shot-shaping control. The recent increase in club head size has meant that manufacturers have had to use lighter and thinner materials. Typically club faces are around 3mm thick, with some areas of the crown and sole being less than 1mm in thickness. When you consider that as Padraig Harrington hits the ball it accelerates from 0 to 175 mph in less than half a millisecond, generating a compressive force of over 2,000 pounds it is amazing that the club head is able to withstand these forces. However, due to the thinness of the head construction it can lack the stiffness to maximise the energy generated at the point of impact, which can result in lost distance. To overcome this Wilson have developed ETF technology. This exclusive technology creates a line of resistance just behind the club face, directing energy back towards the ball. This maximises the energy transfer at the point of impact and doubles the size of the sweet spot, or Hot Zone, creating a longer, more forgiving driver.