Aluminum Alloy The double socket arm is die-cast from aluminum alloy, and the base is formed by a one-piece die-cast aluminum alloy component with a high-hardness TPU ball injection-molded at the top. The one-piece die-casting ensures its durability and resistance to breakage. | Heavy Duty For its aluminum alloy construction, this holder boasts exceptional load-bearing capacity. The double socket arm efficiently translates the force applied by the knob, ensuring that once you tighten it, your desired angle is firmly held in place. Even on bumpy roads, it remains rock-solid, making it a reliable choice for securing your tablet device | Universal The holder utilizes a spring-loaded mechanism, accommodating tablets ranging from 6.5" to 12.9", including popular brands like iPads and Galaxy Tabs and more. Crafted from premium ABS material, the clamp features four contact points, each equipped with silicone anti-slip pads and integrated limiters. It securely holds tablets with a thickness of up to 0.63 inches, ensuring a reliable grip at all times. | Multipurpose This mount can be installed in any location with a diameter of 0.236", and we provide both M4*20 and M4*30 screws, along with wall anchors for wall mounting. This allows you to install the mount in any scenario you desire, such as on the dashboard of van semi-truck ,big rig,RV；next to the helm of a yacht, on the walls of a kitchen or gym, or on an office desk. | Free Rotation The unique design of the double socket arm allows for the freedom to adjust angles as you wish, finding the perfect viewing angle that suits your comfort, even if it's just by 1 degree. Switching between landscape and portrait orientation can also be done in an instant.