This is the Riffe Go Pro Camera Mount for Mantis & Mantis 5 Spearfishing Mask Features: Remove screw at mask top center. Remove the small black center/top section of the frame and replace with the Go Pro mounting bracket. Secure with the pin/screw that is provided with the mount. Attached your GoPro camera and secure with the Go Pro's thumb screw knob (provided with GoPro housing). Now, you'll never miss a shot! Capture all your spearfishing action and you'll never have to convince your friends you killed it out there. RIFFE's Go Pro mount attaches to either the RIFFE Mantis or RIFFE Mantis 5 mask. Includes mounting bracket and pin/screw.