Use an alignment aid for a square putter face
The reviewed putting aid helps align the putter face square to the target line, but it does not improve the stroke itself. The speaker recommends this kind of aid for golfers who specifically struggle to line the putter up square.
Channel: MrShortGame Golf
Watch official source at 1:56Why this context matters
The speaker did not count makes and could not establish that the aid improved overall putting results.