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 360 panoramic rotation 90 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 the camera is attached to