Made of durable lightweight ABS plastic Compatible with GoPro Hero3 Plus and Hero4 standard and skeleton housings Compatible with GoPro sportsman mount Allows more mounting solutions. Package included: 2 x Standard Backdoor Mount; 2 x Skeleton Backdoor Mount

Made of durable lightweight ABS plastic Compatible with GoPro Hero3 Plus and Hero4 standard and skeleton housings Compatible with GoPro sportsman mount Allows more mounting solutions. Package included: 2 x Standard Backdoor Mount; 2 x Skeleton Backdoor Mount (Two fits Hero3 Plus / Hero4 original housing, other two fits housing that is compatible with Hero3);