Andoer 2 in 1 Skeleton Backdoors with Fixed Pin Block Waterproof Case Backdoor + Perforated Backdoor Case Cover for GoPro Hero3+/4 and for New Hero3 Waterproof Camera Housing;

1 Features:
Made of ABS plastic, portable and durable.
Suitable for GoPro Hero3+/4 and for new Hero3 waterproof camera housing.
2 in 1, one is a waterproof case back door, the other is a perforated back cover.
The skeleton backdoors are with fixed pin block, which can mount one camera in a fishing rod or a firearm to capture  footage by using other accessoxres.
These two back covers have rectangular foam-rubber cushion, which have shock-proof function. 

Specifications:
Brand: Andoer
Material: ABS plastic
Compatibility: For GoPro Hero3+/4 and for new Hero3 waterproof camera housing 
Item Size: 6.7 * 5.7 * 2.3cm / 2.6 * 2.2 * 0.9in(each)
Item Weight: 31g / 1.1oz(both) 

Package List:
1 * Waterproof case backdoor
1 * Perforated case cover

Note: 
Camera and other accessories are not included.