The PING Eye 2+ Beryllium Copper (BeCU) irons are designed for forgiveness and feel for golfers of any ability. These irons have a cavity back design that maximizes the perimeter weighting. This perimeter weight distribution reduces the twisting of the clubface at impact so your shots stay on target even when the ball isn't struck perfectly on the center of the face. The material used for these clubs is a dense copper alloy that provides better feedback for players that need the responsive feel to make precise shots.