Great Planes package of fifteen pivot point hinges are used to connect control surfaces to the airplane, such as the trailing edge and the leading edge of control surfaces. The pivot point hinge has four interlocking "fingers" at the joint instead of the usual three. This ensures an extra strong hip joint. Locking fingers increase strength and durability.
Drilling a 1/8" dia hole into the control surface of plane to insert the hinge.
Epoxy or CA glue to fix hinge in hole