Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Will this rig mount on a tripod? One user said yes, one said no. Does anyone know for sure?
Document: Construction seems solid, but once I mount the Canon 5D II, I can't access the battery door and CF door.Have to undo the whole rig in order to change battery and swap cards..very annoying...
Just purchased this and while I haven't had time to field test it, it does seem like a solid product. The cage is both lightweight and sturdy, and the handle is comfortable and secure when attached. At this price point there's no reason not to pick one up. However, just know that you're paying for the cage and the handle (still a bargain) because the 15mm rod attachment is useless.
Sturdy construction but they did not tap all the holes on the cage. Disappointed this limits my options greatly. Not sure If i can trust them anymore.
I bought this for my 7D and though I do not like the choice of colors on the tips, it is well made and it complies with the functionality I was looking for. So yes its a good buy.
For the price, you can't beat the product. However, the more you use it you'll find little things - not all the screw holes are drilled consistent - so some can be harder to screw in than others. Also, make sure you purchase some thumbscrews to connect your accessories.
I use this as part of my &#34;rig&#34; with a Canon 6D. I have good access to the battery door and the side connectors for HDMI. As long as you are not expecting jewelry, you will be happy with the quality. The surfaces and corners are smooth and slightly rounded. The surface appeared to be painted with a black enamel. All of the quarter-twenty holes that I have tried ran smooth.
Even more frustrating is that if the clamp is mounted upside down on the cage then the battery door DOES clear the lock -- however I can't attach a tripod plate because that side of the clamp has smooth holes and not threaded ones.If they had only machined the holes on the opposite side of the clamp to be threaded, it would have worked! It just needs that little bit of extra clearance (a few mm) to open far enough to admit a battery.
Why spend more on other brands when this things does exactly the same thing for half the price plus it comes with the 15mm rods. It's sturdy and securely mounts my 6D with access to the battery compartment and memory card slot.
This is my first DSLR video camera cage I didn't build myself and I think it's great. I've looked at cages costing 3-6 times more and I don't see the advantage of spending so much more. The Neewer cage is very solid, all 1/4&#34; or heavier aluminum, and very well finished. It holds my Canon 60D without the battery grip perfectly, allowing easy access to the battery and SD memory card doors on the right side and to the AV connections on the left side.
This cage is really strong. I was actuall really happy with it. It has '1/4 20 holes all over the place to add your accesories. I have a Nikon D5100 and it fits great. The only slight drawback is that you can't change the battery without removing the camera from the base plate cause the tightning wingnut for the 15mm rod is in the way. A quick release plate might help. Overall it was well spent money.
Answer: YES!  there are 1/4" 20 thread holes, two to choose from each side of the bottom of both the rail clamp and the cage itself.  best cage for the price hands down, cant go wrong.... best of luck!