Features: 1. Made Of Aviation Aluminum Material, High Hardness, And Light Weight 2. Extensive Helmet Base Compatibility, Including NVG Tactical Helmet Base, Fast Helmet Cuttlefish Base, Af Helmet Cuttlefish Base, M88 Helmet Bracket Base, Mich Helmet Bracket Base, Wendy Helmet Cuttlefish Base, Etc. 3. Widely Applicable To for Hero12 Black / Hero11 /10 /9 /8 /7 /6 /5, / Pro, Action 4 And Other Action Cameras 4. One-Click Quick Installation, Press To Fix And Remove; 5. The Dried Cuttlefish Blocks Are Directly Connected To The Camera To Provide Real-Time Vision Of The Battlefield. Description: 1. Applicable Models: for Style Mount Compatible With Any Full-Face Helmet And Action Camera 2. Warm Reminder: The Camera Shown In The Picture Is Only Used As A Scene Display And Does Not Include The Camera. Material: Aluminum alloy colour: As shown Package Contents: 1 x Quick Release Bracket Holder 1 x Long Screw Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.