Although the details
may vary from kite to kite, most dual line kites, with few notable
exceptions bear the same anatomy as this diagram. Some may have
fewer or more standoffs, or two spines, or a divergent tail, but
consulting this diagram will enable you to talk about the parts
of your kite with confidence.
In general the Upper
Leading Edge (ULE) and Lower Leading Edge (LLE) are joined with
a metalic ferrule - a thin tube, often affixed to the ULE that
the LLE will slot into. The leading edge spar is usually contained
within a sleeve sewn into the leading edg of the sail. This sleeve
has cutouts to allow the Upper and Lower Spreaders to attach to
the leading edge spar with rubber connectors.