TISURMagnetic Quick Release Keychain,Titanium Detachable Rotatable Key Chain Connector, Magnetic Key Holder with 2 Key Rings

Small compact size. Very strong magnet, but also has a physical latch to prevent accidental disconnection. The latch is very easy to operate, so keyset can be separated with a quick one-handed motion.

I'm using this to attach a single accessory (mini keychain mutlitool Leatherman Squirt PS4) to my "main 'key ring'" (carabiner) rather than hanging all my keys from it, so YMMV as you consider my review, below:Pros:Lightweight (body & included flat split rings),Straightforward, solidly functional detach via push button & pull + reattach via magnetCons:Slightly bulky in circumference & length ("barrel"/cylindrical "body" housing the connection point),Diameter of holes on each end to attach split rings are too large IMHODiameter of the included flat split rings is too large (I can change these out, though)

I have a hard time taking the thing apart with one hand. I use it for my ID badge so a strong magnate is almost a detriment. Quality is great.

This stays put. I carry alot of keys that need to stay with me at all times that can not be taken away from me in a scuffle Ease of removing them is fantastic 👌

This is a great heavy duty key ring. I wanted something that I could separate my house key from my car key easily. This fit the bill. Highly recommend