The Idea Pro a12 irons are engineered to meet the high standards of design and performance that better players want. The traditionally forged 8620 carbon steel head construction of the Idea Pro a12 iron set provides outstanding control, performance and feedback for the lower-handicap golfer and appeals to better players with a thin top line and improved camber on the sole. Each head is triple milled (on the face, grooves and cavity) for more exacting performance from club to club. A precisely located low center of gravity and progressive heel to toe weighting provides added stability in the long irons and more workability in the short irons and wedges. The progressive offset through the entire set offers better players superior control and workability of their ball flight.