Features:
Brand new.
High quality aluminum material.
Motor axle hole diameter: 4.0mm.
Suitable for brushless motors and speed controllers.
Delicate workmanship.

Specifications:
Color: Silver
Material: Aluminum
Motor Axle hole diameter: 4.0mm
Single item size: 3.2 * 1.5cm(L * D)
Single item weight: 6g
Package weight: 31g

Package including:
5 * 4.0mm Propeller Adapter