tungsten weights

They use in cup cars .one 30 pound block is like $1800 bucks from stock car steel . Pretty pricey , lead is the only way to go for kart .people wonder why it cost $ 25 million run one season in cup car .tungsten is just one of reason why. Stock car steel rents there out for season .
We used it on some of our rear engine dragsters. A real-world price is 25.00 - 30.00 per pound; for non-refined tungsten material.
Looks like my Horstman axle clutches are worth more for their tungsten weights than their use. How about some U-238 depleted uranium? that stuff is real heavy too.