100 Rounds Refill Balls Ammo Compatible with Nerf Rival Gun, TiopLior Foam Bullet Ball Replacement Refill Pack Fit for Rival(HIR, High-Impact Rounds)Perfect SizeEach rival ammo measures 0. 87 inches. This size is perfect for Rival blasters such as Zeus MXV 1200, Nemesis MXVII 10K, Artemis XVII 3000, Khaos MXVI 4000, Apollo XV 700, Atlas XVI 1200, Helios XVIII 700 and Kronos XVIII 500 Blaster Gun. Attention please: This 0. 87 rival ammo is too big for hyper, and too small for popper. High QualityThe rival refill balls are made from non toxic PU material, offering kids a better game experience. We