This is the zen oracle putter / training aid .I have had (and keep having) multiple comments telling me that this putter is illegal to use as I only demonstrated it with the ball in the middle .I however found out at a later date that it is meant to be used when putting normally as well (which it can be used for on its own in completion) .Which makes it good for if you want to practice but still keep the same feel in your training aid to the actual putter that you use.It has been used by a few t

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