I had really high hopes for this clip but was disappointed. The quality is great and cool little gadget BUT the hole is not big enough to fit over a normal key ring. I included another brand in the picture for comparison.

I originally bought my first set of Python clips direct from the TEC accessories website back in mid 2014 and was extremely pleased with them. They were easily worthy of a 5-star rating. I use these clips in conjunction with a dangler clip to carry my keys (on a key smart), a small flashlight and a Leatherman squirt multi-tool. Recently I lost one of the clips and could not be more disappointed with its replacement. The original design of the Python clip was smooth from day 1, not a sharp edge on it, and had a great stonewash-esque finish that really resisted scratching. They were also very strong and never unintentionally released the item it was retaining. These newer python clips however, wow, where to begin? Basically they are the opposite in nearly every way! The new clips come out of the box with rough edges on them and finish is shiny and easily gouged and scratched. Also the new clip unintentionally let go of one of my items within the first week of use, so they clearly aren't as strong either. In the attached picture, the 3-year old original design is on the left, the new version (~2 months old) is on the right. Judge for yourself. I can't recommend them anymore.

These little things look to be made fairly well. To hold keys or to keep a AAA flashlight/swiss army knife at the ready. I am confident that I will not be disappointed.
These are not a dollar each. But, nothing any good is never dirt cheap. I really like these and will be getting more at christmas

Outstanding little clip. I bought these to use with my Victorinox Farmer knives. I carry these knives in my front pocket on a Mini Maglite lanyard looped around a belt loop which keeps the knife handy for quick tasks and keeps me from laying them down and losing them. However there are times when the lanyard is in the way. These little clips attach to the lanyard split ring perfectly and allow a quick release from the split ring on the knife and a quick reattachment when finished with the task. Very sturdy and secure so the knife doesn't come unhooked in the pocket.

Low-quality garbage. Mine broke the first day I used it, wire portion fell of and is gone forever.