Binary allows you to no longer compromise performance when choosing between steel or graphite but instead maximizes performance by providing you with steel where you want it and graphite where you need it. Binary is the first steel and graphite combo set that allows for multiple set makeups by offering different shaft material options (steel or graphite) in the #6, #7 and #8 irons. This allows each golfer to choose, based on their needs, where they want their steel to graphite transition to happen and gives them the power to create a set personalized to fit their game. Binary is a highly engineered set of steel and graphite shafts that are perfectly designed for each other by maintaining frequency, balance point and flight characteristics between the steel and graphite shafts to provide a seamless transition when switching between the two shaft materials. Reference the chart below the specs for your recommended Binary set makeup.