If your ball doesn’t start on your intended line, nothing else matters – not speed, not read, not tempo, not stroke.

Start line is the foundation of great putting.

Tour players know this.
Great putters trust this.
Most amateurs never train it and spend years guessing.

Key #1 gives you the visual clarity and feedback you need to build a reliable start line.

Your PuttBox uses two precisely calibrated hole sizes to reveal face-angle accuracy instantly:

• Small Hole — Trains precision and exposes even tiny face-angle errors
• Large Hole — Builds confidence and repeatability

If your ball starts even ½ inch offline, it will miss immediately.

No guessing.
No false confidence.
Only clean, honest feedback.

Before you begin, confirm:

✔  Ball centered to the middle of the small hole
✔  Putter face perfectly square using the alignment groove

Now you’re ready.