The kingjoy qb series ball heads are compact ball heads designed to be used with compact and dslr cameras with medium lenses the ball heads are made of die cast aluminium to maintain sturdiness and stability they have a repositionable locking level for 360deg panoramic rotation plusmn90deg tilt movement and a friction control for safer and more precise movement as an added safety feature kingjoy designed a patented dual security knob to prevent the camera from accidentally falling off