Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Does it brings 2 or 1 spring collar? Is it a pair?
Document: We have a small make shift gym in one of our units tents and after a few close calls with our one pair of worn out clamps I found these on amazon for very cheap. I bought 2 sets and so far there just as good as any more expensive clamps out there and hold back as much weight as we need them too. If we every get another 2'' bar I'll be ordering another set.
I have used this type of bar collar before and they work great. No hinges to break, nothing to get stuck, nothing complicated or expensive to break. Just a spring and a couple grips. Simple, easy to use, quick on and off the bar, safe, lasts forever. Buy!
Have read a number of reviews regarding the angle of the grips and the strength required to open the spring, as well as the fit on different sized olympic (2&#34;) bars. I purchased two sets of these clamps and have used them on two different Olympic bars and on dumbbells. The clamps are stiff to open, but not as tough as some I've used. Both sets fit the different bars perfectly.
Have used these at least 4-5 times a week for a month and half, and so far they have worked out great. Very sturdy in design, very strong feel of clamping with no issues scraping the bar or anything. Not much else I can say about it, it's a decent collar for the price, your old school spring style, nothing bad to say about it.
Needed these for some dumbells we had no collars for. Worked great & haven't had issues. I gave them 1 Star less for their cheap construction & the potential for wearing out down the road
Your standard barbell collar, needed an extra set my two inch barbell. They stay in place and the price was decent, no complaints.
Would not tighten on my xmark olympic bar. Not sure if the collars are bigger than 2 inch or my bar is smaller than 2 inch.
Bought a hex bar for my home gym and was thrilled to have it until I realized I had no collars, so I ordered these and received in 2 days. Excellent and secure fit.
Have owned for about 2 months. They fit and have a strong enough grip so that the weights do not shift. I am currently sharing the set with the olympic bar and the curl bar. I will be getting two more soon.
One is very tight on the 2&#34; bar and hard to get on and off, the other is just right. If you have a weak grip then this may be difficult to use, but good exercise to strengthen those forearms. I'm fine with it but a challenge for others in the family.
Answer: yes