Instruction: Answer the given question using the supporting document.

Input:
Question: Will this head rotate a full 90 degree,
Document: I tried to go cheap on this aspect of my audio/video setup and I was immediately sorry. The last product I got simply could not hold even a very light camera at a 90 degree angle to the floor.Learn from my mistake. Pay a couple extra bucks and get this item.
I like it. It's small and works great for my gopro. I only wish that when you loosened the ball head, it didn't also allow the base to rotate.
Bought this to go with a monopod because the stick didn't have a rotating head. I'm so happy I did, this gave my husband the needed flexibility to be able to rotate his attaching device (in our case, a long distance laser measure).
for the money you will not find a better head, it holds a full size camara firmly with a 2000 mm lens,, yes a 2000mm,, not 200
This head was unfortunately not lengthy enough to allow me to do what I needed with the particular tripod I was using (rotate my Nikon d5100 into portrait mode) but that isn't really the ball head's fault. It just wasn't built for this particular model of tripod.That said, it works great with another tripod I use (a mini Silk) and I feel like this ball head is well-built and sturdy.
I bought this head mount to fit on top of a monopod. I need the flexibility for my POV Sony Action Cam to rotate and bend at the end of the pole as I ran, allowing for different angles. I knew it would be light weight, but was pleasantly surprised at the size. It was much smaller than I expected. I've used this along with the monopod on several runs now and had no problems carrying the setup for up to two hours.
This fits my needs perfectly. I can keep this little ball head in the camera bag without it taking up space or adding weight - and yet, when I need it - it comes through perfectly! Don't let the size and price fool you. This is a nice quality product that works exactly like it should. I usually use it for smaller "pocket" cameras with 1/4" mount threads, but it will easily hold your full sized DSLR or video camera.
When I opened the package and got my first look at the Professional Mini Ball Head Mount, I was disappointed. It was smaller that I thought it would or should be. I attached it to my monopod and mounted the camera - a full size DSLR with a 300mm lens. I lightly tightened the little thumb screw and WOW! This thing is rock solid. It's easy to adjust and holds a heavy camera and lens firmly at any angle. My initial disappointment was replaced by delight.
I'm an ex-pro photographer, and was pleasantly shocked at the high quality of the photos with this combination of equipment.Nikon COOLPIX S8200 16.1 MP CMOS Digital Camera with 14x Optical Zoom NIKKOR ED Glass Lens and Full HD 1080p Video (Black)BIG BROTHER FOR BIGGER CAMERASIn a pinch, you could use this ball-head with a heavier camera, but I would not use it with a DSLR or comparable camera.
I was a little hesitant when I ordered this because it wasn't the heavy duty version. It works perfect for my application. It screws on aManfrotto 5001B 74-Inch Nano Stand Replaces Manfrotto 001B (Black)and has the mini ball head on it then aePhoto SB800 Shoe mount Flash Adapter with 1/4-20 Threadwith aRadioPopper RPCube Canon Versionthen aCanon Speedlite 580EX II Flash for Canon EOS Digital SLR Cameras. I prefer using the ball head over the flash heads own tilt and rotate features.
Answer: Yes, there is a slot on one side that allows it to angle 90 degrees.