1Universal Compatibility: The top 3/8 inch screw can connect tripod ball head and camera ball head with a quick release plate. The bottom 3/8 inch thread is equipped with a 1/4 inch to 3/8 inch conversion screw, which can install a horizontally adjustable base on tripods, monopods, and various sliders. 2Precise Angle Adjustment: The camera tripod head leveling base is equipped with three wheels, which can precisely adjust the angle of the camera and tripod ball head within a range of /+5 degree to maintain level on uneven ground. Each wheel is equipped with a thumb screw to fix the angle. 3Premium Structure: The tripod head leveling base is made of aluminum alloy and has undergone black anodized CNC processing, making it sturdy and durable. The anti slip rubber pad at the top prevents the base from sliding and enhances stability. 43 Built in Bubble Levels: The three built in bubble levels in different directions can help you easily and accurately adjust the camera's level, taking beautiful photos and videos of various styles. 5Practical to Use: A tripod head leveling base camera leveler is a great helper compatible beginners and professional photographers. It can be used to adjust the angle of the tripod and is very suitable compatible shooting in various scenes. Its load bearing capacity is 33 pounds (15 kilograms), making it safe and reliable to install heavy equipment.