10- Pack Heavy Duty D Shape Chain Locking M4 4MM Chain Quick Link Connector (Black)

Nice sturdy carabiners, bought them to adjust the height of a dining room light, seriously thinking about replacing all of the links with these things!

The links looked great and worked well. They seemed durable.

They look sturdy and worked as expected. I'd recommend.

These are great for when I need something secured but not exposed to possible disengaging when I don't want it to! Carabiners work for things that I need to attach and detach quickly. These are for more permanent use! The barrel nuts work well. Size allows me to use in a lot of applications where the clip needs to be small!

I will be using these quick links in to hang an island ceiling light to the canopy instead of the closed D links that came with the light (which are almost impossible to spread apart then pinch back together). This will make it simpler to hang the light. My light only weighs about 12lbs so it should work. The description should include a maximum weight tolerance for these quick links. I would be hesitant to hang anything over 20lbs using these quick links, there are only about 3-4 threads to screw into for the closure. I would have given them 5 stars if it had been weight rated and more threads.

Sturdy links that make hanging interior or exterior chandeliers much easier. No need to pry open metal links to remove or add chain sections, or buy light canopies with an attached quick link chain connector. The black links were a perfect match to the links on the chain of a black lantern exterior porch light. I added a second link to the remaining section of the extra chain, which was used for a second light. A simple, easy product that works.

Perfect

Great for adding links in an oil rubbed bronze lighting fixture. So unnoticeable that I forgot they were even there until I was asked to write this review.