Gemfan折りたたみプロペラ9.4x5グリーン（CW / CCW）（2個）

• Overall
• Quality
• Value

Customer Rated

Oct 22, 2016

Had high hopes for these props but they are extremely flexible and vibrate up and down like crazy at moderate throttle speeds. Unusable.

• Overall
• Quality
• Value

Customer Rated

Jan 31, 2016

The overall quality is quite good and the price as well. Unfortunately I could not test it on my quad because of missing nylon washers.
In order to install the blades on the hub you need 4 nylon washers. A part any consideration on the reason why they designed that with washers (could have made thicher the blade hinge) and on the difficulties of mounting a prop on the field (specially for an old pal with short sight), the blade are shipped with 4 washers instead of 8.This make them unusable. Besides, apparently HK does not sell the nylon washers separately. Too bad!!!!