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 REQUIRES: Hinge Point Drill Jig ROBR1319 for staight and centered holes. COMMENTS: Also available in a package of Six (ROBQ2507). These look like two christmas trees joined together at their base.RobartPart ROB308