HIGH STABILITY: Low profile ball head design creates stronger locking force and greater stability. The screw knob is located on the side of the ball instead of the bottom of the ball joint, lowers the entire center of gravity of the ball joint by 15%, improve stability. WIDE COMPATIBILITY: Equipped with a 1/4" screw, the removable Arca type quick release plate is suitable for all SLR cameras. The 3/8 screw hole at the bottom can be attached to the tripod or monopod Free Rotation Ball Head The screw knob can quickly tighten or loosen the ball and allow it to move freely in any direction. SMALL AND PRRTABLE: Height only 68mm/2.68", Weight only 197g/0.43lb, easy to carry Sturdy & Durable - Max load up to 6.6lb/5kg, made of aluminum alloy.