Aluminum Replacement Rear Snap Latch Waterproof Housing Lock for GoPro Hero 3+, Hero 3 Plus, Hero 4 Camera Fits for GoPro Hero3+ / Hero4 side-open / waterproof housing Allows the rear door to shut tight Made of CNC 6061 aluminum Simple structure and lightweight Package includes:- Rear Snap Latch x 1 (housing, backdoor, screw and tripod mount NOT included)