Cleveland CG Black CB Cavity Back irons 6-PW Nippon 1050 Regular Flex Steel shafts Normal wear from a couple seasons - still lots of life - see pics! Rare clubs, this is the only set on Pricetronic. Manufacturer info: The CG Black CB irons were designed for better amateur golfers with swing speeds ranging from 85 mph to 105 mph. The CG Black CB irons were developed for players who prefer to work the ball toward the flag stick, but still want plenty of forgiveness. The CG Black CB’s long and mid irons also utilize a high strength HT 1770 steel face material for improved COR and increased consistency, forgiveness and distance throughout the club face. Designed with a premium black finish, the CG Black CB irons are offered with the choice of two high end shafts, Nippon® NS Pro 1050 GH steel shaft or a UST® Recoil 660/670 graphite shaft. IMPROVED COR (FACE DESIGN) Making CG Black irons longer wouldn’t mean much if they weren’t more accurate and consistent too. The thin, high-strength steel face creates a larger area of maximum ball speed, plus allows for more perimeter weighting for more accuracy and consistency. ?? FACTORS FOR IMPROVING HIGH COR AREA: ? High strength steel (HT 1770) is used as face material and can achieve a thinner face compared to that of the 588 MT. COMPARISON OF HIGH COR AREA The 20% larger High COR Area allows for more consistency throughout the club face which helps make this not only longer but more accurate than other clubs tested. ?? MAX COR: + 0.2 UP ? HIGH COR AREA: 20% UP