Swept diameter88.9 mm (3.5 in)
Pitch / blades2 in · 3 blades
Mass / material1.5 g · polycarbonate
HubØ10 × 4.7 mm
Center boreØ1.5 mm
T-mount2× M2 · 5 mm spacing
Geometry authority: declared-envelope
Datum: Hub bottom at z = 0; rotation axis +Z; XY centered on shaft bore.
The blade is a deliberately simple show body, not an aerodynamic model or manufacturable flight propeller. Its tips reach the declared swept radius; Poltergeist's circular swept disc remains authoritative for clearance.