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. Wide Compatibility: This ram mount suction cup has multiple 1/4"-20, 3/8"-16 Threads, arri-locating holes. It is strongly recommended to use Lanxri magic arm T130 together, through which you can connect cameras, mobile phones and sports cameras. High Quality: High quality aluminum alloy, good sucker toughness, high temperature resistance, wear resistance, aging resistance, oil resistance, acid and alkali resistance, water resistance 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 Tool Set(2 hex spanner; 2 screws) Before you place an order, please provide me with English information to facilitate our delivery and logistics