PING Scottdale Tec Hayden BlackModels (Ketsch) feature shaft positions back from the face but just in front of the center of gravity, which encourages pulling the putter through the hitting area instead of pushing it for a consistent stroke. The goal is to provide the feel of putting with a blade with the aim and stability of a mallet. The alignment aid features a long line and a single dot. Its a result of eye tracking research that shows that combining a line and a focal point