The Putter Wheel is designed to replicate the size, weight and feel of an actual golf ball. It is engineered to be highly sensitive to mis-hits, resulting in wobbling and curving off the intended line showing you instant feedback.

The red beveled edges help train golfers to get their eyes directly over the ball. The corresponding alignment template is also an important part of the Putter Wheel system. Once you have trained yourself to roll the Putter Wheel smoothly on line, you can deploy that mental visualization on the course by drawing 2 parallel lines on your game ball with the alignment tool.
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Putter Wheel