

Two 6.5 pound TZM Molybdenum cylinders
TZM Molybdenum is an exotic alloy of 0.6% titanium zirconium and carbon, and 99.4% molybdenum.
I bought these round bars off ebay a couple years ago for a grand total of $81 USD. They're 2.5 by 3.6 inches long and weigh a total of 13.1 lbs/5.9 kg