ShipeeKin 3-in-1 Plastic Helmet Curved Arced Extension Arm Mount Kit (7.5/13.5/19.5cm) Replacement compatible for all Gopro Hero Series, SJCAMs, 4K, EK7000, GeekPro and other Action Cams

To be honest, I purched these to see whcih extension size would work best for a specific application/shot.They're okay'ish for the price, best used as 'sacrificial' mounts.They vibrate far more than, and are nowhere near as strong or attractive as aluminium ones.

Great works well, bought this for my full face flip helmet where the chin piece folds right over to the back of the lid. This design of lid left little room for the camera, the camera arm solved this problem perfectly. Nice and strong but light. Had an accident while wearing this and it simply broke away and did not cause any problem.

These were not expensive so I was not expecting the world. However the long and even medium length arm wobbled a lot. Go Pro Hero 4 in a waterproof case on the motorbike tootling around B roads. Wobble made footage unusable. These worked ok on my canoe though.

I used the small size to mount a Garmin Varia rear light onto some saddle rails. It seemed perfect at first and gave me the optimum location for the light. After a few months, however, the plastic work-hardened and snapped whilst just cycling along normally. Fortunately the Garmin light survived but I will replace with metal extensions as this type of plastic clearly isn't suitable for long term use.

I used this to attach go pro to extension arm so I can put camera in water, gives a nice curve so I don't have to go in water

Perfect for my intended use, excellent value

Does exactly what I want - extends the reach of my car mount so I can attach it to my upstairs house window clearing the roof. I use it to time-lapse photograph the night sky with a GoPro, looking for meteors. You get about 1 meteor a night on average, but loads of planes.

Seems impossible to tighten enough that it doesn’t flap about but I guess you get what you pay for. If just an extension for low movement activities it would be fine. Was pretty useless for snowboarding.