If you're looking for high performance and that realistic jet sound in your latest 70mm sized EDF model, then look no further than this high quality 12 bladed unit.

The 12 blade fan moves a greater volume of air to make for a quiet unit with an amazing sound, this is the closest you will ever get to the sound of a turbine without actually buying one!

Molded from 30% FRP with integral mounting lugs, the unit is for use with 28mm EDF motors or those with a 28mm extension and has adapters to suit 3.17 and 4mm motor shafts.

For the best results from this and any ducted fan unit we strongly recommend checking the balance of the complete assembly and eliminating any sources of vibration.

Specs:
Outside diameter: 72mm (85mm with intake lip)
Shroud length: 63mm
Rotor diameter: 68mm 
Material: Carbon fiber reinforced Nylon rotor
Motor dia: 28mm max
Shaft adaptor to motor: 3.17mm or 4.0mm
Recommended motors: 3400Kv motor for 4s/2200Kv motor for 6s
Max RPM: 52000 RPM
Max power: 1800W

Included:
70mm 12-Blade EDF Unit
Spinner w/retaining screw
Intake lip
3.17 & 4.0mm shaft adapters
Retaining nut & washer

Always use a Watt meter to ensure that your motor and ESC are running within specs, as 10/12 blade fans draw more current than conventional ones.