Lanxri 4.5" Suction Cup Mount Camera Car Mount for Video Shooting On Car Body, Boats, Windows, or Any Smooth Surface Product Feature: Strong Bearing Capacity: This camera suction cup mount is 4.5" suction cup, we choose the best atmospheric pressure solution to ensure that our bearing vertical tension reaches 132 lb/60 kg, the side load reaches 66 lb/30 kg, and it can bear 6.6 lb/3 kg in motion. Pump-Activated Vacuum Suction: When using the suction cup, we need to clean the adsorption surface first. By pressing the air pump continuously, the suction cup will become tighter and tighter as the white line goes into the tube. We need to pay attention to the white line of the air pump. When the white line is exposed from the tube, it means that the suction is insufficient, and it needs to be pressurized immediately. It is recommended to pressurize every four hours. Widely Used: The 11.8-inch universal magic arm has a wide range of applications, and can be used to expand camera monitors, cameras, camera cages, mobile phones, microphones, lights, tripods, stabilizers, camera suction cups. Anti Deflection Positioning Column: The magic arm has 1/4 "screws with 4 anti deflection positioning columns at both ends , and the anti deflection positioning columns are equipped with springs. It is also applicable to 1/4" - 20 threads without anti deflection holes. Product Specification: Material: Aluminum Alloy+Silicone Max Payload: 3kg/6.6lbs Product Dimension: 13x11.5x5cm/5.1*4.5*2" Weight: 388g/0.85lb You Get: 1 x Suction Cup 1 x Magic Arm 1 x Tool Set(2 hex spanner; 2 screws) Before you place an order, please provide me with English information to facilitate our delivery and logistics