The Putting Plane is the only putting stroke trainer available that keeps the shaft on the plane that it was at address during the entire stroke while keeping the face square to the path at all times.  Most putting stroke training devices focus on the putter head path but ignore what the shaft is doing.  The putter head could be staying on the device while the shaft is off plane and the face could be opening or closing during the stroke.  The design of The Putting Plane allows it to be adjusted to match any lie angle; it also allows the putter head to follow an "ON" plane path.

The putting plane will be the last stroke trainer you will ever need!