New bbs that glow in the dark and would be useful as tracers so you can mix these with your regular ammo and would be great for night games to find out where your bbs are going. You'll need a tracer gadget for you to use such as those from Tokyo Marui. A 1000-round bag costs US$7.99 at RSOV.com... "'Vanaras' 0.25g x 1000 shots 6mm precision fluorescent BB, glow in the dark and need to work with bb gun tracer."