Diameter: 2.2cm (0.1cm)_x000D_ Quantity: 50PCS_x000D_ Material: EVA_x000D_ Manufacturer recommended age: 5 years old and above_x000D_ Applicable to model: [Round Size]: For Kronos XVIII-500, Helios XVIII-700, Apollo XV-700, Khaos MXVI-4000, Atlas XVI-1200, Artemis XVII-3000, Nemesis MXVII- 10K and Zeus MXV-1200 blasters 1Round Size: For Kronos XVIII-500, Helios XVIII-700, Apollo XV-700,Khaos MXVI-4000, Atlas XVI-1200, Artemis XVII-3000, Nemesis MXVII-10K and Zeus MXV-1200 blasters. 2Has been tested extensively and proven to perform well. 3Includes 50pcs rounds foam balls, meet your multiple needs. 4Non-toxic,to ensure the entertainment and security in the competition. 5Foam ball, good elasticity, far range, high hit?rate, light weight for game themed party.50 xRounds Foam Balls