Those arrows were only to be used in a fight in close quarters. No one else had arrows of that kind, except Saradvata's son Kripa, Arjuna, Ashvatthaman and Karna.
निकृष्टयुद्धे द्रोणस्य नान्येषां सन्ति ते शराः। ऋते शारद्वतात् पार्थाद् द्रौणे(कर्तनात् तथा॥