This is an original 1985 G.I. Joe Tactical Battle Platform Support Leg, a genuine vintage component from Hasbro’s G.I. Joe: A Real American Hero line.
The support leg is a structural component of the 1985 Tactical Battle Platform, helping support and stabilize the playset. It is a useful replacement part for collectors restoring or completing their vintage Tactical Battle Platform.
 
Condition: Very good!