The knife itself functions great. Very easy to open, a satisfying click when it closes. The first time I tried changing the blade the carrier lifted out and caused the amalgam of springs and magnets inside to move out of place and jumble together, which turned into a 20 minute puzzle that ultimately made me appreciate the simple design, though I'll be more careful in the future.

Just a fantastic EDC cutter. Great design, super convenient to deploy and retract, and everyone who sees it wants one.

Great knife!

Pretty little thing and fun to play with. Easy and fun to deploy, fairly easy to change blades too, as long as you're careful. Works with Tajima blades.

Constructive criticism: it is a little too easy for the whole mechanism to pop out when changing blades, although with a little work I was able to reassemble it.

I also tried using the lanyard hold to put it on a split ring, but it makes it awkward to use, something pliant would probably work better. There might be room for improvement here though, not sure. Minor.

Overall very happy with it.

Easy to purchase. Speedy delivery

All around great experience!!! From start to finish they were in contact with me via email fomr receipts to confirmation emails...... super quick and flawless to buy and arrive at home lol....will recommend And I will be buying from rivery again!!!

This is the coolest utility blade ever!!! Super fidgety and it stimulates the senses..the craftsmanship is superb!!! Awesome cnc work!!! I'd deffbuy from these guys again, plus it's an american company 2 states away,can't beat that!!

This thing is great! Every kitchen needs one for opening foodstuffs and boxes. Works great (fidgety), is safe, and replacement blades are inexpensive. My only concern is if replacement springs will be available in the future. I think I just found my stocking stuffers for the year.

Great fidget knife!!! Thanks

Excellent service.

Easy one handed activation. Useful for doing common tasks that usually require a razor blade, not a pocket knife. Beautifully made with smooth operation.

Exactly what was needed to repair.

Just what I needed.I suggest everybody getting a spare parts just in case..

Fit and finish are perfect ended up getting the blue ano blem version, I can't find anything that would be a blem. This thing is awesome it functions perfectly. And I can't put it down

I happen to follow one the more popular knife reviewers on YouTube and was introduced to the Zero Copper and just had to have it because of 3 important reasons: 1) It’s made in USA and in one of my most favorite states to visit. 2) It’s a great design and perfect size that fits in the coin pocket of my Levi 501 jeans and 3) I can fidget with it either quietly in reverse so I don’t drive my wife crazy or I can fidget with it properly and get so much satisfaction from the swish-swish-click and just relax after a crazy day.
Thanks for making such a great product. You’ve made a fan of me!