Abstract: An attachment for the head of a golf putter which is to be used to train a golfer in making a precise smooth swing when striking of a golf ball in order to propel the golf ball directly to the target. The attachment comprises a rigid body which has an arcuate outer surface. The attachment is to be removably adhesively secured to the striking face of the golf putter. The arcuate surface of the attachment extends in an arc from a direction directly adjacent the toe of the head of a golf putter to a position directly adjacent the heel of the head of the golf putter.