I have been using it for two months and it is excellent. It connects the router on the roof with the router on the ground floor. The speed reduction is about 6Mbps over 30m.

I bought it because it is very cheap and has excellent ratings, but I made a mistake.
Although it is Cat6 (10Gbps), it does not go above 100Mbps at all.
I tried it with 4 different computers and the same thing happens with all of them.
The system (Windows & Linux) sees the network controller as 100/100Mbps, while it should see it as Gigabit (1000/1000Mbps) which is its actual capability.
When I connected the computers to the router with the short cable that came in the package, they were recognized as Gigabit (1000/1000Mbps) properly.

P.S. My internet connection is 200Mbps Fiber.
Waste of money...

I use it to bring a cable from the router to the living room, to the computer in the room. The cable is durable even though I take it from corner to corner. It doesn't lose any speed on 100 Mbps line. I highly recommend it!

Very good quality cable, it does not lose any speed at all. Used on an Ubuntu computer with VDSL50.

Flawless construction, very durable even with door closing and very economical. I would buy it again!

It does what it is designed to do. I had a loss of 3mbps at 30 meters from the 90mbps, which is a small downside, almost negligible.

Very good manageable cable and the connection is almost perfect.. It's worth every penny.. I have it connected to a 4K TV and it doesn't freeze at all!!

I use it to connect two houses together... in a 2.5gbps full duplex connection, it doesn't lose signal at all.
It is placed outdoors (with rain, wind, etc.), but being cat.6, it is sturdy. However, be careful: if you have it in a spot where the sun shines for many hours a day, it will deteriorate over time as it doesn't have protection from UV radiation.
It is slightly thicker than regular known Ethernet cables, so if you want to pass it through narrow holes, etc., you will have difficulty.
Update: I connected it with a 20-meter cable using a coupler to have 50 meters, and there was absolutely no difference... not even a packet drop.
Update: Because I see many comments that confuse things a bit... A GOOD LOCAL NETWORK CABLE DOESN'T NECESSARILY IMPROVE INTERNET... it simply improves the connection between the router/switch/AP and the devices... if your internet is slow, an expensive cable won't fix the situation

I used it to network all the spaces in my house.
I have 300/300 and I effortlessly achieve maximum performance everywhere.
Perfect for this price.