Sinnofoto Q02U CNC Professional Premium Metal Damping Camera Tripod Ball Heads With 1/4 Quick Shoe Plate Includes Tri-Bubble Levels Ballhead for Tripod,Monopod,Slider,DSLR Camera,Camcorder 1. Material & Craftwork: Well made by the original aluminumcube and 0.25 nano-meter anodizedharmless coating to health. Suboptical surface to keep fingerprints off permanently. T6 grade high strength aircraft aluminum alloys.+- 0.1mm tolerance on the processing. 2. Heavy duty use &Sturdy:2.8"*2.8"*3.9", 0.87lbs only,Ball diameter;36mm Bonus 70mm quick shoe plate support to long lens use Max loading:33lbs 3. Scales index: +-180 degree, 5 degree per section, Allow to use it more precise and easy 4. Safe Slot&Tuning Damping knob. Hidden safe slot under the fast plate and tuning damping knob to avoid the risk to your camera. 5. CNC Shaped&Spiral locking clamped design. The head was full of all-in-one CNC shaped and backed with 5 years warranty by the spiral locking clamped structure.