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Pulley attachment for GoPro
This model was made for a competition, please download this model by following this link:
http://myminifactory.com/object/pulley-attachment-designs-for-gopro-4893
This model allow you to set your camera on a rope. If it's tilted you will have a nice rolling down, making a great travelling!
Two holes on the sides makes speed control possible by setting a string for better regulation.