Please note that this stand is only for viewing or playing with your device. If you frequently need to tap or touch the device's screen, the stand will wobble slightly, which can be uncomfortable. However, due to some physical theory, this is unavoidable. Tips for use 1. When holding the thick piece, you can try to wrap the gooseneck into an "S" shape or a circle, which can provide greater stability. 2. Bend your hands and only bend the gooseneck when adjusting the position, because it is very hard. Pull hard on the device when adjusting, as it may break the nut. 3. In addition, do not over-tighten the base flange, so as not to break easily. Base strengthening bolt clamping baseReinforce and thicken the base. Will not break easily. Suitable for 7.5cm thick counters or headboards. Rigid Reinforcement ArmMade of aluminum magnesium alloy, reinforced material, very strong and flexible CompatibilitySuitable for Apple iPhone iPad or other Android devices from 4 to 10.6 inches.