COBRAs Forged TEC Black irons deliver the precision of a tour iron and the playability desired by all. A re-engineered Technology Enhanced Cavity (TEC) features a 100% carbon fiber medallion for superior sound and feel preferred by better players. Offered in a ONE Length configuration, each iron is designed to match 7-iron length and weighting. An all new multi-material TEC (Technology Enhanced Cavity) construction features a faster forged steel face, Carbon Feel Technology, and tungsten weighting that work in unison to deliver the ultimate blend of distance, forgiveness, and precision DBM (Diamonized Black Metal) Technology is a revolutionary surface finish that provides extreme wear resistance, reduced glare and a professional look preferred by better players. The DBM process chemically implants the black finish into the club head, increasing durability, without affecting playability, for longer lasting, better looking irons.