Here are some m7b5 (a.k.a. half diminished) arpeggios. I compared them to m7 CAGED shapes so you can see where the 5 is flatted.
-Related Lessons-
0:17 – Minor CAGED Arpeggio Shapes | CO 4/10
0:17 – Minor CAGED Chord Shapes | CO 2/10
2:03 – Extended (7 9 11 13) Chords?! | UGT 3/8
2:45 – Diminished Arpeggios & Chords