Opened and closed between each shot, "thrown" into the back seat of the car, poor tripod suffered every outrage. A junction of a foot relented. Off track, dust, sand and even river bottom.
In view of the use I make of the failure is forgiven and certainly not attributable to Manfrotto. I ordered a new one. The "old" returned repaired in perfect condition.
It is light, lighter than his little brother to three aluminum elements, more expensive too. Lock The keys are extremely effective and quick to implement. Over time they can loosen and access to the screw heads is not very convenient. The central support can be positioned horizontally (good for the macro) and even reversed. The tripod legs can be opened in three different positions. What height is lost is gained in stability.
A superb rugged and portable tool everywhere, without suffering too much extra weight he represents.