The E-flat power chord (abbreviated "Eb5 chord") is a two-note chord consisting of the notes E♭ and B♭. The chord is formed by removing the major third from a E-flat major chord.
E-flat power chord
E-flat fifth chord
E♭omit3 E♭(omit3) E♭no3 E♭(no3)
dyad (two-note chord)