SAMS Tungsten Putty in Case for Carp Fishing Weight Sinker and Pinewood Derby 0.5 oz. Tungsten rig putty - 0.5 oz.(15g/pc), Non toxic and long lasting, Green, Brown and Black Color for selection Soft malleable rig putty, Break off exact amount of putty you need, Easily tune the balance and hit the exact weight Superb for outwitting rig shy carp, Mainlines and balancing baits for perfect presentation Great for fishing sinker for popups for depth control, also for your pinewood derby car 100% money back gaurantee if you are not completely satisfied