Ping ceased production of the beryllium copper model in 1999 due to environmental regulations.PING Eye2 – One last hurrah! They were the irons Tiger Woods won the US Amateur with before the sponsorship deals were signed. Distinguished by the "+" in the cavity underneath the patent numbers. Same design features as the "+ No +" model but with increased groove width. Distinguished by the raise dot or drill mark within eye in cavity. Same design as the "Square Groove" model but with increased groove width as a result of the agrrement reached between Ping and the USGA regarding grooves.
Made from the fall of 1989 to the spring of 1990.Įye2 Dot. The grooves were the same as the "Square Groove" model. Additional design features included a more rediused sole, a modified bounce and grind, a slightly thinner topline, a slight increase in clubhead size, a little higher and more rounded toe, and slightly stronger lofts. The scalloped refered to the design process where metal was removed from the center of the sole and redistributed in the inside of the cavity near the toe. New head design featuring a "scalloped" sole. Patented design identical to the "Square Groove" design but made from Beryllium Copper. Patent pending design identical to the stainless steel "Square Groove" but made from Beryllium Copper.Įye2 Beryllium Copper. US Patents D4512577 and D276644.Įye2 Beryllium Copper. Made from the fall of 1985 to the spring of 1990.
This change reduced the amount of surface area between the groove but did not change the distance between the inside edges of the grooves.
This new model is referred to as the "Square Groove". The change involed modifying the groove by creating a slight radius at the top of the groove. Design is identical to the "U Groove" with the only change ocurring in the grooves. Made from the middle of 1984 to the fall of 1985. A version of the "U Groove" featuring a lighter swingweight, the result of a slightly smaller head. The result of the 1984 USGA ruling allowing square grooves. The second Eye2 iron featuring "U" grooves. This patent pending design featured "V" grooves.
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