Although some copies, according to the other reviews have hard spots or are difficult to adjust well, well this is absolutely not the case with the one that was delivered to me (so-great feat by the way, because ordered on Friday in the afternoon and delivered on Saturday morning at 8.30 !!!). Very fluid head in 2 directions and fully adjustable! What a joy to stay on the lookout regardless of weight (huge after several hours !!) mounted on a 150-500 5D2 Gripe! What more for this price ... ah, yes, still a manual and a guarantee certificate because it is delivered without any document, just packaged in a common bubble wrap: low-cost agreement, but this does should not prevent the legal minimum!