From long to mid to short, each part of the Idea a7 hybrid iron set has been individually designed and optimized to integrate together and outperform traditional irons. The #3 and 5 hybrids offer a blend of high performance, forgiveness and increased carry distance. Their sole camber design improvements increase performance from all lies, while the rear weighting increases spin and launch. The #5 mid-iron was created with a patented hollow design to improve gapping between the hybrids and short irons. Its 13% thinner face helps to increase distance. The #6-PW short-irons are each optimized for maximum scoring potential. Thinner top lines and sole widths provide workability while the dual cavity back and stabilizer bar offer forgiveness and feel. Each club has a Proforce AXIVCore Black Graphite 85g shaft.