Here are some tank traps I painted up and a terminator pretending to be a tank trap. I bought these on ebay a few years ago and I can't seem to find a solid answer on what they are. Google seems to suggest that they're an out of print forge world dragon teeth model but I couldn't confirm it. I didn't pay much so they're probably fake though they were very crisp and the resin was dyed grey so who knows. Either way I like them. They usually are placed in the opponent's deployment area to deny him a better piece of terrain.