Model 6221 is quick versatile and easy to use. It can be positioned horizontal to 180°’s easily with it’s unique thumb locking mechanism. It is perfect for Sporting events or wildlife shooting when swift camera movement is essential. This ball head allows you to move and lock your camera freely with one hand and the thumb lock regulates the amount of friction on the ball allowing for easy free movement to firm, stiffer movement. The 6221 comes with two built-in bubble spirit levels, 1/4" screw camera attachments and quick release camera plate. This head is suitable for use with compact digital cameras, digital/film SLR’s or medium format cameras. Load capacity 6.5lbs