Nerf N-Strike Flip Clip Dart Refill Refill set includes 2 Quick-Reload clips, FLIP CLIP connector and 30 Clip-System darts. Fast-reload refill kit comes with two clips for you to snap together  and then flip when you need to reload! For use with any N-STRIKE clip blaster (sold separately). Keep the blasting action going on and on with this FLIP CLIP Refill set! When one clip is empty, dont worry  all you have to do is flip it over to use the other clip and get back in the action!