Aluminum Alloy and Silicone: The top part is made of aluminum alloy, CNC processed for clear threads and durability. The bottom part is made of premium silicone, providing strong suction power and preventing easy detachment. Stable and Sturdy: The 4.7 inch hand pump style vacuum suction cup allows for easy suction by pressing the side button. After a period of attachment, when the warning line reappears, it indicates vacuum attenuation. Simply press the pump button until the warning line disappears. Adjustable in Multiple Angles: The suction cup camera mount can be installed in a 360 degree rotation, allowing for 90 degree vertical shooting. It can be rotated to any desired angle as needed! Multiple Hole Design: Featuring several 1/4 inch threaded holes, the suction cup camera mount offers powerful functionality. The middle part has a 3/8 inch threaded hole and a for ARRI positioning hole, effectively preventing rotation and detachment. Versatile in Multiple Scenarios: This suction cup camera mount can be securely mounted on smooth surfaces of cars, boats, buildings, and other objects. Aluminum Alloy and Silicone: The top part is made of aluminum alloy, CNC processed for clear threads and durability. The bottom part is made of premium silicone, providing strong suction power and preventing easy detachment. Stable and Sturdy: The 4.7 inch hand pump style vacuum suction cup allows for easy suction by pressing the side button. After a period of attachment, when the warning line reappears, it indicates vacuum attenuation. Simply press the pump button until the warning line disappears. Adjustable in Multiple Angles: The suction cup camera mount can be installed in a 360 degree rotation, allowing for 90 degree vertical shooting. It can be rotated to any desired angle as needed! Multiple Hole Design: Featuring several 1/4 inch threaded holes, the suction cup camera mount offers powerful functionality. The middle part has a 3/8 inch threaded hole and a for ARRI positioning hole, effectively preventing rotation and detachment.