The iShares Barclays 20+ Year Treasury Bond Fund ( TLT) is the exchange-traded fund proxy for the 20-year bond.
The criticality is evident on the next chart -- the long-term view.
As for the trade, that's UltraShort 20+ Year Treasury ProShares ( TBT).
On the TBT daily chart, you can see those swing points more clearly. Just look at the move Wednesday to understand the power of the TBT to move fast and far.