Use a hanger to monitor lead-forearm contact
The speaker places his hanger training aid about two finger-widths from the lead forearm and likes to keep its connection when coming out of the top. He says contact with the forearm puts the clubhead in a strong position, while a different move shown in the demonstration steepens his own swing.
Channel: CraigHansonGolf
Watch official source at 9:51Why this context matters
A specific commercial hanger-style training aid is demonstrated.