Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: what is the diameter of the opening that the handle fits
Document: This is just what I was looking for!! This unbrella holder is completely adjustable and very sturdy. The hole for the umbrella handle is huge and my 68&#34; unbrella handle fits with room to spare. The handle holder has an adjustment to secure the umbrella. This is great for rain or sun protection. I highly recommend it.
Is a good product works well with minimal modification, needs a piece of an inch and a half PVC into holder first painted black and then umbrella fits perfect into holder with out over clamping umbrella so over all works very well. P.S.The umbrella handle now fits tight without being clamped. (Bag Boy handle).
After seeing holders that come with higher end carts, I was a little suprised at the size of it when it arrived. It has a very large diameter tube that will accomadate any hand-held umbrella I've seen, a good bit larger than those high end holders. wound up havig to use the first week-end I got it and it worked very well, even with my gel-handle umbrella. The mount is very versital, but requires about 3 inches of exposed tubing.
I have an older club runner cart which has a larger diameter shaft than the newer models. The grip that holds the umbrella holder to the shaft was too small. I had to grind both halves and purchase longer screws to mount it. Other than that it works fine holding the umbrella.
I'm sure it works for some, but unfortunately it is not one size fits all. We had to return it.
We have a Britax stroller and it fits great on it. We put a golf umbrella on it and it is great for daily walks.
It fits to my ball bag easly and it was not a problem putting it together. Umbrella fits right into the socket.
My husband love this product. It fits perfectly and works great with  his PowaKaddy Golf Cart. Very secured and sturdy. He cannot stop talking about it.
Very accommodating to multiple sized umbrella STRAIGHT HANDLES!!! I have about 4 different kinds of golf umbrellas and it fits ALL OF THEM (not at the same time obviously LOL). Good buy if you need an umbrella holder for a BAG BOY PUSH CART or standard carts, if you have the BIG THICK BARS like CLICKGEAR, I don't think it will fit.
I am in a power wheelchair and only have use of my left arm/hand. This product is perfect for me to hold an umbrella when it rains, also to keep me in the shade when the sun is too strong. This is exactly what I needed especially when I go to my son's soccer games!! !One problem I had was the clamp was not wide enough but I was able to use a longer screw to tighten the clamp onto the bar. It fits almost any straight armed umbrella.
Answer: yes