Tandem Sport Serving Flags Elevate your volleyball serving skills with our Volleyball Serving Training Flags.  The essential tool for players of all levels seeking to perfect their serve accuracy and consistency. Designed to help you visualize and achieve precise serving targets.  Set of 5 Nylon Flags numbered 1-5. Each Flag is 14" (L) X 13.2" (H).  Attaches to the Tandem Sport Net Extender.  Net Extender is sold separately.