The SBH-50's fluid compact ball head moves swiftly and steadily so you won't miss the action. Constructed of solid, strong magnesium alloy, it's durable and yet lighter in weight than the industry standard. Unlike other ball heads, SBH ball heads are designed with molded body parts, not assembled cut parts, like the competition. Its smooth locking knobs allow you to move the ball head swiftly and securely into the perfect position, even with the heaviest lenses and cameras. SBH-50 ball head spins 360 degrees and enhances your angle possibilities by tilting from -90 degrees to 35 degrees. It has two bubble levels.