This a GoPro 3 compatible "Frame" bracket - a Black plastic frame which holds/grips a GoPro naked. It is useful to have one of "compatible" frames so you dont have to drill/grind/sand or DIY your original GoPro Frame for each multicopter 8-Balls mount on your fleet of Scarab multicopters - I like to Dremel open a bigger side slot on mine for the MicroSD card - so i can take it out with the camera still mounted too - at this price get 2 or 3 and make custom mounts. Whilst we are big advocates of a fully protected GoPro - there are times on small multicopters where the mission is safer and the objective is LESS WEIGHT and longer flights - its handy to have a few spare frames....
Note : In order to slip this into a 8-Balls Metal mount - you will need to Dremel away 0.5mm of black plastic on each side as its slightly wider.
Excludes Tools such as dremel