Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: what is distance between pulleys
Document: There is a little plastic rope stop at the end of the rope to prevent it from unwinding from the pulleys. While using it moving a 600lb tool ( 400 - 800 lb load est ), this piece snapped, and richocheted off a wall, scaring one of my helper friends to death.
I'm not sure if I bought this exact brand, but it looked just like this. The first time I used it the cheap molded plastic pulleys split when I applied a load to them. If you are lifting under 100 lbs, it might be ok. Otherwise, forget it.
It worked. Once. Then two of the pulleys broke. It still works I guess, but with one less &#34;compound&#34; in the compound pulley. I did use it pretty close to the limit, so I shouldn't complain too much. You get what you pay for, and this did the job that needed to get done.
The set up is good for a couple of hundred pounds. It would be DANGERIOUS to lift a 1000 lb with these pulleys. They work for raising our hot tub (empty). I installed the hot tub on a platform two feet below our deck. Two pulley sets are great for raising the 400lb tub for maintence. It is a cheap solution for this application.
I give it 5 stars for the price! The rope? I replaced it with 7/16&#34; 100' 600lb test braided nylon rope and it works great, I didn't even try to use the cheap rope that came with it. On the bottom of one of the pulleys, they need to install an &#34;eye&#34; to tie the rope to.
I replaced the bolts through the nylon pulleys with a 3.5" 5/16 bolt so there was enough shoulder to reach all the pulleys. The reason being with the shorter bolt that came with it the side pulley by the nut is riding on threads rather than the smooth bolt shoulder. I can see this end pulley binding and wearing out very quickly unless a longer bolt is supplied.
At least the manufacturer is consistent. Like other reviewers I found all nuts holding the cross supports, pulleys, and hooks had not been tightened. I don't mean they were not fully tightened, I mean one turn with your  fingers and they're off. Definitely put lock washers under the nuts and tighten them down before using or the whole thing will fall apart. And it is definitely not suitable for 4000 pounds.
The pulleys look sturdy and the rope is sufficient length (could be longer). Certainly the price is right. The problem I had is with lifting light, bulky loads. The pulleys swung around and twisted the rope off one of the pulleys. Not sure how that could happen but it did. I wound up hoisting about 15 loads on a tangled setup. Probably should have stopped and restrung it. But it might do it again. Will try again next winter.
I use it to raise/lower the top of my FJ40. The top weighs about 250lbs. I use two of them for stability. This unit works well - much better than a 3-pulley system I used before (and that one had even smaller nylon rope!!). I would recommend for 250-350 pounds. At this weight, the pulleys work fine - no opinion on heavier items.
These are great for all kinds of heavy lifting and moving. I bought two of these and have used them several times already. The only ting I would improve is to make the hooks slightly larger. I have a tall barn building and use two of these hooked together to  be able to span the distance between the floor and top of the outside wall. The hooks will not snap together so I had to use another connector to attach them.
Answer: yes