Use for attaching both ends of a rail between 2 posts.
Requires no glue. Epoxy can be used.
Drill a 1″ hole 1″ deep into both sides of both end joints. Attach the springs to the bottom of all holes. The ends of all springs should be at 12:00 high. (see instructions on bag) Insert the guide pin in either spring. Twist together 1 to 1.5 turns after the wood make contact with each other. (Click on VIDEO below)