Features:
Precision Motor Shaft Adaptation Procedures
The Hubs may be precisely adapted to motor shaft diameters of 3mm, 3.2mm, 4mm, 5mm, 6mm, 6.35mm, 7.95 mm.
Remove the desired locating ring by twisting. Insert the ring with draft angle as shown in the lower figures.
The hubs may be adapted to other shaft diameters by drilling the non-precision 8.0mm.hole with a desired diameter tough drill.
Electric Flight Propeller
Color: Red
Size: Approx.50*40*10mm

Caution: 
These are expendable parts. Before every flight, you should carefully examine them. If anything seems wrong even slightly crashes or any contacts, stop use these . Responsible and carefully che with any steps and its equipments. Choose from a suitable flying location to ensure safely for everyone.

Paage includes:
4 x Propeller 10 x 4.5 Set
4 x Motor Shaft Adaptation