Features: Light weight and small size, it is convenient to carry and use. Universal magic arm, could fit for lots of action cameras; The magic arm help to mount your camera on other products-; 360rotating if with the magic arm, the direction of the bilateral for head- can be adjustable arbitrarily Can firmly clamped on helmet. Very useful hand tool for photography accessaries Specifications: Material: Aluminum-Alloy Processing technology: CNC-machining Weight: approx 56g Color: Black Arm- with Black/Red/Blue Screw for optional Surface- Treatment: Anodized Size:approx 80x30mm/1.18x3.15in Compatible camera: GOPROs full series Action cameras Note: Transition: 1cm=10mm=0.39inch. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1PC xTripod Mount Adapter