Just what I needed to finally stop losing a key ring of my clip of keys!Well made, strong and easy to use.Strong and easy to use. Good value for the price.These Carabiners have a solid feel to them. They appear to be fairly sturdy. A single clip can hold up my 200lb frame without any apparent stress or damage. All the mechanisms operate smoothly and as they should. All in all, they're a nice addition to my hiking pack.The Good:-Heavy duty-Screw clock-MultifunctionalThe Bad:-NoneThe Bottom Line:These 12KN carabiners are heavy duty and you can use them for multiple things EXCEPT for climbing. We just use these carabiners for our dog leash. We have a larger dog so it's nice to have a carabiner at all times because we can use it on his leash or just to clip on to things. Overall, I would recommend these 12KN if you're looking for a heavier duty carabiner.These clips work great and are multifunctional. We got them to use when camping - especially for clipping dog leashes to stationary objects. The clips seem to be of good quality. They are strong yet light weight, which is a big plus especially for belay or anchor use. The locking feature is super helpful and gives us peace of mind With the dogs.These are so strong I literally think that it could hold a 500 pound man off a building. We got these just to hold a tv in place so it didn’t swing. No issues or rusting.Very light weight and nice looking for hanging keyring on and keeping track of it. Can be latched to pack rings or straps also for hands free carry. Extremely strong and unbreakable.These are perfect for my dog tie downs. Great quality. Very happy with purchase. If I ever need more I will definitly buy these againMuch better quality than the ones you find at the checkout of Mark’s or Walmart. Sturdy and have been sat on, stepped on, fallen into, dropped and still perfect condition. You have to twist the top so it locks in place to keep it secure. Great keychain!I like the construction and finish on these. The locking mechanism operates smoothly.That being said, I haven't tested them in any significant function yet.These carabiners are not the cheapest you will find but it's for sure reliable.Good quality thick and sturdy.