Quality of the line seems great. I'm just bummed that the spool was wrecked during the shipping process. Didn't think it was going to be that big of a problem until I started rolling it out.
It cracked and made a big mess of my job.

I have attached a photograph of the product label so you can verify it is correct.

The product information on Amazon is misleading. The cable arrives clearly marked: "WORKING LOAD LIMIT 1400 lbs". This is good news! Breaking strength is normally 5-times the working load limit, thus the "breaking strength 1400lbs" information on Amazon is likely a mistake. All you parents sending your kids down ziplines made out of this cable can sleep at least a tiny bit more peacefully.

Cable arrived on time and in excellent condition. The plastic spool was undamaged, though I can see how it might get damaged in transit.

This cable works great, held me @ 205lbs. Kids can't get enough of the ziplines. I looked at all the kits and decided to go my own route.

We have two acres of slightly sloping land with trees everywhere.

The hardest part of setting up the zipline was getting enough tension on the line. I made two ziplines, a short one for our 3 year old. It was about 25 feet long. Getting the tension on the short one was no problem, just used a come-along to get it tight, then clamped down the cable.

The second one was much harder, about 175 feet long. But just a 50lb kid would pull the wire down from 12 feet to 5 feet. That was after using a truck to pull the wire tight. Then tried a large $15 turnbuckle and ended up straightening the circles at either end of the turnbuckle trying to get enough tension so the line wouldn't sag.

Pro tip for any zip line over 100 feet, use a come-along and leave it, I mean incorporate into the zip-line as a permanent part of it. For our setup, I put the wire around a tree, inside a garden hose to protect the tree, and then clamped it with three clamps. Then went to the low end and put a loop about 6 feet from the tree. I put a stand alone piece of wire around the low tree. Then I put the come-along between the loop from the long wire and the wire on the tree. The 2 ton come-along more than holds the max of the wire, and they only run about $25.

Something like this (not mine but similar): Maasdam Pow'R Pull EZ Winch - Portable 1/2-Ton - 1-Ton Capacity Winch

If you factor the cost into the project, it will save you a LOT of trouble. It's a LOT easier to crank the cable puller a notch or two as the wire stretches over time than trying to tighten a turn-buckle with a 1/2 ton of tension on it.

Fast shipping, just right for the job

Used cable on a radio tower and it was more than strong enough.
My only complaint is that the galvanizing didn't hold up very well and the cables are rusty after a year's exposure to the weather.