The velbon qhd 63q is a professional magnesium ball and socket head with a maximum load capacity of 5000g the locking lever on the side of the ball head enables easy positioning of the camera while the 3 built in separate spirit levels ensure the camera is held in position exactly where it needs to be the removable qb 635l quick release plate with 14 20 camera attachment screw allows you to remove the camera from the head in one quick motion so you can start shooting freehand in an instan