Superb product, this ball is a delight to use. This is my first ball, and have often read enough about Manfrotto, I launched and do not regret it! Friction knob allows fine movements of the patella for ultra-precise framing. You get used very quickly to handle the assembly and the versatility to switch very quickly from a horizontal alignment to vertical and vice versa. The locking lever allows you to completely block all (base + ball) extremely efficiently, once tight, nothing moves a millimeter. Note that this lever can be repositioned to optimize use according to his desires by pressing the lever axis and then pivoting it around the axis. The quick release plate to its name and the small safety latch provides full confidence: whatever the chosen frame, no risk of seeing our dear reflex fall due to inadvertent stall !! Combined with a Manfrotto tripod 190XPROB, all havoc, and we quickly forget all plastic tripod despite the services !!
To conclude the order, saying that if it is not that I am no longer in my first purchase on Amazon, and it's always the same seriousness and speed of delivery. I continue and will continue to recommend Amazon to my surroundings !!