Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does this come with one or two QS39 quick-release plates?
Document: First impression is that the tripod and the sbh-100 ballhead are solid. Yes, the legs are a bit challenging to swing and the sections kind of hard to pull out, but that's actually a good thing. Remember that sections that slide easily can also collapse easily. The O-ring on the column is also a cool feature to absorb any accidental release shock to your equipment. A key set is also provided to tighten the legs and the ball head link.There is some play on the tripod/ballhead, but you just need to tighten the column and the quick release plate on the head and it's tight again.
I actually like that double security feature on the plate. The tripod/ballhead were actually bigger than I expected, with thick padded legs and a strong core. And it comes with two plates! Keep in mind that the ballhead is a full-range ballhead so you may have to work on leveling your camera.You may have to play with loosening the buttons on the legs to get the multiple leg angles and the rotating/collapsible column is definitely a plus. Overall, it's a beautiful tripod that weighs just right for my equipment.
This is a very stable tripod, it does get a little iffy when you extend the center pillar out to the sides but still very good if you use a remote release. The only issue that I have is I wish the ball head had a better lay out so that it was easier to flip from landscape to portrait.
The bag is well made and holds the tripod with the head attached. The flips locks are well made and adjustable. The leg release buttons take a minor amount of time to get used to, but again are better than the pull-type that the benro and induro models use.The ball head....it does what it should. The ball head is not quite as smooth as I was expecting, but the panning action is pure silk. I would rate the ball head by itself at 4-4.5 stars.
Granted I've only had the tripod for about a week. The other option I had in mind was a more expensive Manfrotto for twice the price of this one.
This Vanguard tripod is versatile and can adopt many position. Strong enough to support my Canon 7D in any angles. It is a very good product. But, I order it with the Rocket Air Blaster Giottos AA1900. It was suppose to be a good deal! Today for the same product, those two items are at 175.95$ and i paid 203.40$ a month earlier. Without Rock bag and the free Vanguard camera bag mail-in-rebate...Did i miss the DEAL!
The arrival of this tripod was very quick. I have used it once s far and I really like it. It is much better than the tripod I was using. I am still getting use to not having a lever to move my camera around with, but I am sure I will get used to it in time. It seems light enough to carry around for a while and the carrying case is a nice feature.
First I bought a Vanguard Alta Pro 263AGH Aluminum Tripod with GH-100 Pistol Grip Ball Head. The head was so tightly attached, I could not remove it, even with tools. I sent it back. Next I bought the combo above. This time the azimuth numbers are painted on counter-clowckwise. I'm returning it soon. Two defects on two tries. VANGUARD, please do something about your quality control.
though, i cannot still 100% approve or reject this one since i don't use it often. http://www.amazon.com/gp/product/B0073F8TS0/ref=oh_details_o01_s00_i00
I compared about a dozen tripods, many with the articulating center column, and even bought the two I thought best fit my needs. I needed something compact but still tall enough for my 6'1&#34; size. I really wanted the height offered by the Benro a2970f, but the folded length was just to long. Needed light weight and small size for backpacking. I've been playing with this setup for a while now and I love it. I sent the 263AT back to amazon (kinda ordered it by mistake anway.)
Answer: Mine came with two, but based on other responses it looks like they may have accidentally given me an extra. It also comes with a carry bag that isn't pictured on Amazon.