Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: Can this easily be switched to different ladders or is it permanently attached?
Document: I have bought several different ladder levelers, and this is by far the best. The mounts attach fairly easily with a drill and a couple wrenches. Once attached, the leveler easily connects and disconnects with the mounts on either side. This leveler is far easier to adjust than every other model I have used. You can leave it attached to either side and it is out of the way, yet ready to use when you need it. Changes sides in a matter of seconds.
So you can have just one leveler and easily use it on three or four ladders.
Like many things on Amazon these kits are listed several ways (and for different prices) so I am not sure...
Those projects that require tall ladders are getting more challenging as we age. These levelers help keep us safe. They fit well, and we could not find them in local stores.
We have a pest control company and use ladders everyday. This is the best item for ladders ever invented. Makes setting up on unlevel ground safe and efficient. We have them on ever ladder. Would not have a ladder without them.
I bought this item because I was painting the side of a house with about a 15% grade in the ground below it. I could have rented a man-lift for much more, but this item costs only $100 including shipping. It installed easily (though the directions were a bit too wordy and the pictures unclear), and it works great. Also, it was one of the least expensive, but is really heavy duty.
It's REALLY misleading of Amazon to have one of the pictures in the description. This the MAIN reason I am leaving this review. Amazon PLEASE remove the totally bogus and misleading picture (at the moment it is the 6th picture on the main page). This picture is incorrect. It shows TWO units, one attached to either side.
Very well designed and easy to use. Just so much safer than blocking under the low side of a ladder. Easy on and off for switching sides. Very weather resistant after two years use. If you have multiple ladders, highly recommend getting an extra set of the fixed mounts, so switching ladders is quick and easy.
It took a while to attach the base pieces to my ladder (a Werner MT-17); attaching the bases requires drilling holes into the ladder. Once attached, however, this is very easy to use. I use it to work on the outside of a screened-in porch. The ground slopes, so a regular ladder wouldn't work. The extenders are finely adjustable enough to work on sloping ground, and it feels very steady.
There are three mounting holes in each base that go on either side of the ladder. The mounting instructions suggest that one should place the bases so that two of the holes are above the bottom rung of your ladder and the other hole below the bottom rung. I can't do this with either of my ladders because that places the mounted leveler &#34;foot&#34; below the &#34;foot&#34; of my ladder which it needs to be level with or above.
Answer: yes