This is a Package of Fifteen Steel Pin Hinge Points from Robart.
These hinges will install by drilling a 1/8 hole and inserting the hinge with a bit of glue.

Features:

• For Heavy Duty Applications like Pattern or Aerobatic Aircraft.

Includes:

• Fifteen Steel Pin Hinge Points
• One Header Card w/Typical Installations Pictured

Requirements:

• Hinge Point Drill Jig ROBQ1319 or straight and centered holes.

Comments:

• Also available in a package of Six ROBQ2507
• These look like two Christmas trees joined together at their base.