These irons have been designed to offer the ultimate performance in forgiveness thanks to optimal heel/toe weighting that maximises MOI. The iron has been constructed from 431 stainless steel cast construction, while the heat treated thin face results in greater ball speeds for increased distance. To ensure these irons feel great at impact, they have been designed with a cavity compression slot with dampener. Lastly, these irons come equipped with a KBS Tour 90 Steel Shaft.