1. Made of high quality CNC aluminum alloy body material. 2. Adjustments up to +/- 15 degrees to ensure the camera is perfectly level. 3. With bubble level, intuitive display, easy to adjust, keep camera level. 4. Reliable locking system, suitable for photo/video & bird-watching head. 5. Applying to DSLR Cameras with 1/4 inch screw. UNC3/8 inch base thread, apply to any tripod.