I have two of these. One I use to attach my wallet to me with Spectra cord. I found that on both the plunger didn't make it to the flush position with the hole on the shackle. I used a Dremel and carbide burr to elongate the split ring hole so that the plunger could extend to the flush position. I also wasn't pleased with how little spring pressure held it locked. I bought a pack of the same springs, but longer, and tried that. Still I added a bit of another spring to stiffen it further. There is a ball bearing swivel on the wallet end and with the swivel on the shackle, there is no possibility of twisting. I consider it perfect now.

I use this everyday to connect my two dogs by leash. It’s perfect, light weight-weight and strong. The swivel keeps the dogs from getting tangled and twisted.

I purchased a couple of these and they are great. I went back to buy a couple more and the price had gone up from $29.95 to $59.95 , retail price $189. Ridiculous Price!

I have a lot of small titanium tools on this shackle and it works so well I bought a second one.

Very well made, with that "frosted" finish that I really love in the best titanium products. Just note that it's small (exactly what I wanted). I've mounted mine to the outside of a duffel bag as a handy & secure place to attach my keys. A little pricey but very much worth it!