TACRAY Box Cutter Knife, Pocket Knife Titanium Handle, Utility Clip Knife with Retractable/Replaceable Blade for EDC, Comes with Plastic Packaging box & 1pc of Extra Blade for replacement

Very slim and lightweight. The screw-button is a little tricky. If it's too tight, obviously the blade won't slide, but if you don't tighten it enough (when carrying), it will come undone and slide open in your pocket. That's happened twice, so I think it's worth mentioning.

Overall fit and finish is good. I do like the idea of a box cutter with a longer blade that is disposable when dulled. Lock and detention seems fine, had no issues with the blade self deploying as was mentioned by other reviewers. However, the pocket clip does interfere with the blade ability to slide in and out. Be mindful not to apply any pressure against the clip because when you push down on the lock button to slide the blade in and out the plunger on the locking mechanism stick out on the opposite side and scrape against the bottom side of the clip. You have to learn how to hold the knife so you do not do this inadvertently. Minor issue really.My main issue I have with this knife is the fact that it is advertised as a knife that use the Olfa CK-b2 replacement blade. It, in fact does not! Confirmed by Tacray customer service. This knife uses a blade sourced by Tacray from a secondary manufacturer that decided to make the blades to their standard that’s slightly smaller than the Olfa made one. So, if you are buying this knife thinking that at some point you can buy more blades for it, think again. That’s not the case at this time. Maybe at some Tacray will offer their own replacement blades, maybe? But as of now, no. The knife does come with a spare blade if you should need a replacement. I’m not sure what type of steel the blades are made of but they did not come really sharp and doesn’t seem to hold the edge very well. That’s my two cents.