A set of 2 HQ propellers, 6 blade style with a 5mm center hub.
(multi-rotor applications would need both CW and CCW)
Specs for 5x4x6 CW:
Brotherhobby Tornado 2206 T2
Brotherhobby Tornado T1 1407 3600kv
Brotherhobby Returner R4 2206
T5045 "Indestructible" Tri-Blade V2 (Set of 4)
RaceKraft 5051 Tri-Blade