This is an action camera mount for the OTS Guardian(tm) Full Face Mask (the existing rail system is rather pricey). This accessory clamps to the top of the mask and has a standard mount. Minimal impact to vision and does not contact the rubber straps. Made of PETG carbon fiber plastic with brass and stainless steel fittings. This mount was printed with 80% infil and load testing showed it can with stand over 100lbs. of vertical and horizontal load. Comes with allen wrench - mask not included. The mount is currently used by members of the Port of Longbeach California Harbor Patrol and other fire departments accross the country. This accessory has Design Patent Application No. 29/926,896 Pending. Paypal in the continental USA only, discounts on multiple purchases. Flat fee of $5 shipping for everyone. Thank you for looking and dive on!