Double Top
A double top is a bearish reversal pattern where price fails twice at the same high and then breaks below the low between the peaks.
Two peaks at roughly the same level show buyers failing twice at resistance. The pattern is confirmed when price closes below the trough between them; the distance from that trough to the peaks is the usual target.
It is common and often fails, so traders wait for the break rather than selling at the second peak. See live and back-tested results on the double top hub.