Bows

1. In Yudhishthira's hands was the celestial bow called Mahendra; and 
2. in the hands of Bhimasena, O king, was the celestial bow called Vayavya. 
3. For the protection of the three worlds Brahman created a bow. That celestial and indestructible bow was held by Phalguni. 
4. The Vaishnava bow was held by Nakula, and 
5. the bow called Aswina was held by Sahadeva. 

http://www.sacred-texts.com/hin/m07/m07023.htm